Chemical Aspects of Life and Spit Lab Formal Report

Chemical Aspects of Life and Spit Lab Formal Report 1. Abstract The objective of the Reducing Sugar Test was to test if the substance has a reducing sugar in it by adding Benedict’s solution and heating it, there would be a color change if a reducing sugar is present, or it will remain blue (no reducing sugar). The objective of the Starch test was to test for starch in substances by using Iodine. The iodine will cause a substance to turn to a dark blue color if it is positive for starch. The objective for the Grease Spot Test was to test if the substance had a lipid.A positive reaction would make a translucent grease mark on a brown paper bag. The objective for the Dye test was to test for lipids. When mixed with water and the tested substance, a positive result will occur in it being separated from the water. The objective of the Protein Test was to test for proteins present in a substance using the Biuret Solution. The substance should produce a violet color within 10 drops of Biuret. The objectives of the Spit Lab were to test for starch, a reducing sugar, and effect of amylase on a cracker that is positive for starch and negative for a reducing sugar.Iodine would test if starch was present if the cracker solution changes to a dark black/blue color. Benedict’s Solution mixed with the cracker and heated would test for a reducing sugar (if reducing sugar, it will turn from a green to an orange to a dark brownish color). The amylase was tested on a Triscuit cracker by heating it in Benedict’s Solution, the amount would make it either a green, or orange, and the most amounts would make it brown as mine and my partner’s results. 1. Introduction The chemical aspects lab was done to detect and identify the presence of reducing sugars, starches, lipids, and proteins in various substances.A reducing sugar is a monosaccharide or disaccharide that has the ability of giving electrons to other molecules and acts as reducing agent. A reducing a gent has an aldehyde or ketone group in it that can reduce the ions of some metals, such as sodium citrate, copper sulfate, sodium bicarbonate (Benedict’s solution). In order to be a reducing sugar, the sugar must have a beta-beta bond, which is the bond that can be broken by heat. If they have an alpha-beta bond, like sucrose, then the test material does not have reducing sugars present, it will remain blue.If there are reducing sugars present in the substance, the color will change from a green to orange to dark brown state. Starch is a carbohydrate that is found in potatoes and other grains. It is made of a large number of units of glucose. When starch is consumed, the body's enzymes break it down into glucose, a monosaccharide. Starch can be identified in a test material by adding drops of iodine to it. The iodine should go into the polysaccharide chain, so the color changes to a black color, or precipitate will form. A lipid is a hydrophobic polymer made of two monomers. Since they are hydrophobic it differentiates lipids into a separate group of polymers. The monomers that make up lipids are glycerol and three fatty acids. Lipids store energy and are in hormones. There are two ways to be able to detect a lipid in a test material, a grease spot test or a dye test. The grease spot test is used to test for only lipids that are highly concentrated. Lipids are known to be translucent when on paper. So you add a drop of the substance onto a brown sheet of paper and add a drop of water next to it then let them evaporate.After observing the drops through light by holding it up and trying to look through the paper, if it is translucent, it is a lipid. A more accurate test for lipids is the dye test. If water is combined with Sudan III (Sudan IV was replaced by this), and mixed with the test material, the test material can be considered a lipid if the solution forms a pink color. This is because Sudan III (Sudan IV was replaced by this) is only soluble in li pids. The lipid will be distributed on top of the dyed water, because lipids are hydrophobic. A protein is a polymer made of amino acid monomers.The amino acids bond together in bonds called peptide bonds. A chain of amino acids is called a polypeptide chain. The structure in which the amino acids are bonded determines the function of the protein. There are about twenty different amino acids, but there is a wide variety of possible combinations that amino acids can bond, therefore proteins have quite a lot of functions. Some things proteins are used for are the building of the muscles, tendons, organs, glands, nails, and hair. There are many more different functions for proteins.To detect proteins in test materials, there is an identifying agent called Biuret Solution which when mixed with the test material. It turns purple if it contains a protein. The darker the violet color, the more concentrated it is with protein. The spit lab was done in order to determine the effect of amylas e on starch since starch is a long chain of glucose which serves as a main source of nutrients; the amylase breaks it into a simple monosaccharide. Amylase is an enzyme in the human saliva used to break starch into reducing sugars for energy. An enzyme is a protein, and enzymes speed chemical reactions.Benedict’s Solution was mixed with chewed up Triscuit (which was positive for starch only before), and heated for 2 minutes. This was done in order to create a reaction between the enzymes and starches in the cracker. The darker the color, the more amylase your body had at that time, if it does change color. 3. Experimental Section/Procedure Changes: – In the protein test, a cracker solution was used as opposed to cereal. – Sudan IV was replaced by Sudan III – In the lipid test, a cracker solution replaced buttermilk Procedure: (See attached lab sheet) 4. Data SectionTest Material| Starch| Result| Reducing Sugar | Result| Lipid Grease| Result| Lipid Dye| Re sult| Protein| Result| 1% Starch| Black| +| Blue| -| Not Tested| N/A| Not Tested| N/A| Clear| -| Potato Juice| Black| +| Not tested| N/A| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| Water| none| -| Blue| -| Not translucent| -| No pink| -| Clear| -| Milk| none| -| Orange| +| Not Translucent| -| Pink| +| Not Tested| N/A| Cracker Solution| Black| +| Not tested| N/A| Not Translucent| -| Pink| +| Clear| -| Cereal| Precipitate| +| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| 5% Glucose| Not tested| N/A| Orange| +| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| 5% Fructose| Not Tested| N/A| Orange| +| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| 5% Sucrose| Not Tested| N/A| Blue| -| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| 5% Lactose| Not Tested| N/A| Orange| +| Not Tested| N/A| Not Tested| N/A| Not Tested| N/A| Egg Albumin| Not Tested| N/A| Not tested| N/A| Not Tested| N/A| Not Tested| N/A| 2 drops violet| +| Gelatin| Not Tested| N/A| Not tested| N/A| Not Tested| N/A| Not Tested| N/A| 3 dropsviolet| +| Salad Oil| Not Tested| N/A| Not tested| N/A| Translucent| +| Pink| +| Not Tested| N/A| Spit Lab Cracker| Starch Test| Result| Reducing Sugar test before amylase| Result| Reducing Sugar test after amylase| Result| Triscuit| Black| -| Blue| -| Brown| +| Saltine| Black| +| Orange| +| Not Tested| N/A| 5. AnalysisThe labs were done to test for starch, lipids, proteins, and reducing sugars. The test for starch was done by adding up to 3 drops of iodine into the substance which should be on the porcelain spot plate. The result of a positive starch reaction would be a dark blue/ black color and/or precipitate formed. The substances that had starch were: cracker solution, Triscuit cracker, cereal, saltine cracker, potato juice and 1%starch. These results were expected because of the type of food involved. There were two lipid tests done. The first one was the Grease Spot test, where a drop of the substance and water were placed on a piece of brown paper bag.After it evaporated, and if the brown paper became translucent then it meant that it was a highly concentrated lipid. The only material that showed this was salad oil and it was expected due to the fact that it’s an oil, milk was also expected but did not show up. The second test was the Dye test with Sudan III. Due to the properties of Sudan III, making it only soluble in lipids, it is added to 3ml of water and 1ml of each test material, and then shaken. There was a color change; it changed to pink so the lipid absorbed it causing it to change. Positive substances included: Salad oil, milk, and crackers. The expected ones were salad oil and milk, but the crackers weren’t expected.The Reducing Sugar test was done by placing 5ml of Benedict’s solution into a test tube then adding 10 drops of the test substance, and then heated for 2minutes. If the substance was positive for a reducing sugar, the color would vary from green to orange to dark brown, the beta-beta bond is broken and the color change shows this. The substances that showed positive were: 5% glucose, 5% fructose, 5% lactose, milk, and Saltine crackers, Triscuit crackers (after amylase). The spit lab showed how starch before amylase was negative for a reducing sugar and then after the amylase was added, the alpha-beta bond broke. These were all expected except the saltine cracker that had a reducing sugar.The Protein Test was done by taking 5ml of the test material and putting it in a test tube, then adding 1 drop of Biuret solution up to 10 times to see if a violet color appears. The Biuret solution (made of potassium hydroxide and hydrated copper (II) sulfate) reacts to peptide bonds. Amino acids are monomers of protein and amino acids are linked to peptide bonds so they will react to the Biuret. The substances that were positive for protein were only egg albumin and gelatin. Egg albumin was expected, but gelatin wasn’t. Possible Errors -Cro ss contamination between substances through pipettes, test tubes. – Misread/misinterpreted data results. -Possibly followed procedure wrong. – Wrong measurements of substances. 6. Conclusion Starch Test 1. The positive control was 1% starch. 2. The negative control was water. 3.If there was a color change (black or dark blue), or precipitate formed, starch was present when iodine was added. 4. The 1% starch showed the most amount of starch because it hard a really dark shade of blue and because it is starch. 5. The material that showed the least amount of starch was the cracker solution because it had a lighter shade of blue when iodine was added. Reducing Sugar Test 1. The positive control was both fructose and glucose because they are both reducing sugars. 2. The negative control was water. 3. A reducing sugar was present in the test material if it had a color change from green to orange to dark brown after being heated for 2 minutes. 4.The materials that had reducin g sugars present were: 5% glucose, 5% fructose, 5% lactose, and milk. 5. The materials that tested negative for reducing sugars were: 1% starch, water, and 5% sucrose. 6. The materials that showed positive for reducing sugars all had beta-beta bonds. 7. The materials that showed negative for reducing sugars all had alpha-beta bonds. (Water has only hydrogen bonds not beta-beta or alpha-beta. ) 8. The purpose of heat is to be the energy source to break the beta-beta bonds. 9. If there was no heat, the milk, lactose, sucrose, wouldn’t break. The beta-beta bonds would remain intact since there isn’t an energy source. 10.Enzymes are proteins that speed up chemical reactions. Their purpose is to help break things down. For example, the enzyme amylase is in the saliva of a human and helps break starch (polysaccharide) down into Glucose, a monosaccharide. Lipid Test 1. The positive control is salad oil. 2. The negative control is water. 3. The two ways to observe the presence of a lipid are to put a drop of the material onto brown paper and see if it leaves a translucent grease mark, or add Sudan III to the material with water, and then shake it all up in a test tube to see if a pink color will show. Protein Test 1. The positive control is the egg albumin. 2. The negative control is water. 3.The amount of protein in the test material can be estimated through the number of drops the Biuret Solution took; the less drops the more protein. Spit Lab 1. The starch test was done in order to see if the crackers had starch, or else amylase wouldn’t do anything to it. 2. The Saltine and Triscuit crackers showed positive for the starch test. 3. The purpose of the reducing sugar test was so that if the cracker did have a reducing sugar, the heat could have broken the bond, not the amylase. The cracker had to not have a reducing sugar so we know it was the amylase breaking the starch alpha-beta bond. 4. I chewed the Triscuit cracker because it was a starch an d it wasn’t a reducing sugar, perfect for the amylase test. 5.The reaction changed after I chewed the cracker and did the reducing sugar test. The alpha-beta bond broke due to the amylase and it turned dark brown, before it wouldn’t break and stayed blue. 6. The amount of amylase can be estimated but the color of the solution after the reducing sugar test. For example, green means little, orange means medium, and dark brown means there is a plethora. 7. I liked how we got to test how much amylase we had at the given moment. 8. If I were to do this lab again, I really wouldn’t change anything, the procedure is simple as it could be. The chewing the cracker part wasn’t fun, but it was necessary for your own result.

Qualities of a Good Son or Daughter

What are the important qualities of a good son or daughter? Have they changed or remained the same over time in your culture? Use specific reasons and examples to support your answer. Within a family, children have their own roles including their behavior, their rights and their responsibilities. As to respond to these roles children are expected to obey as well as to be helpful and willing. It is really important for the family structure, the sons and the daughters to have the quality of obeisance. However, the parents’ demands differentiate according to the gender of their child. Boys are expected to become mature man as quick as possible in order to look alike their fathers. They should obey in a more practical way as to get ready for the life sooner than the â€Å"delicate† daughters. On the other hand, girls are often considered as the privileged or even spoiled ones and they are not charged with the hard works. However, they are obliged to maintain their morality and their humility more than their brothers. This is why, in the past daughters were only accompanied outdoors by their parents or their older brothers. Nowadays, this is considered as an exaggeration, but still in Greece daughters do not have the same level of freedom as the sons have. To be helpful and willing is a quality always appreciated the most from the family. Therefore, the sons should be willing to help at the heavy jobs and the daughters at the housekeeping. The willingness is a quality to be taught and parents should not wait their children to be considerate without teaching them at first the value of helping. The greek families of the past could not actually understand that and there were a lot of cases of punishments as the daughters and sons to learn how to behave. Fortunately, the mentalities have changed and improved. To sum up, it is my strong belief that over the period of time the truly important qualities of daughters and sons haven’t changed in my culture. The obeisance and the quality of contributing to the family have remained the same, it is the way we approach them that has changed. PLIGOROPOULOU THALIA

Ruscha Formalist analysis Essay Example | Topics and Well Written Essays - 1250 words

Ruscha Formalist analysis - Essay Example The logo is coloured in red and orange tones, deferring to realistic lighting effects and shade variations as the colours appear slightly muted towards what is presented as being the logo's foreground. But other elements of the work are strangely inconsistent, perhaps in the interests of theoretical allusion, with what would be expected if the scene were viewed in reality. The eight yellow spotlights inter-crossing each other behind the logo are traditionally seen - when the logo is depicted before movies or on television - to penetrate, cross over and intermingle with the sturdy commercial monolith. In Ruscha's depiction, however, they are shown as being unable to penetrate the white opaque light source that projects the wording, and instead are partially blocked by its presence. The spotlights - supposedly for the purpose of illuminating desired features and drawing the attention of spectators - are feeble in comparison to the generating light force behind the imposing logo. Intrinsic within the marketing insignia itself seems to be an otherworldly, ethereal body of light - white and pure and absolute, while the accompanying spotlights possess a yellow, opacity that fails to lighten the nightscape, nor impinge upon the density of the red/orange hues of the logo. The juxtaposition seems to assert a difference between what is real, what is not real and what is contrived - what is genuine, and what is manufactured - positioned against the backdrop of the movie industry and its many illusions. Stylistically, Ruscha has adopted a rigid assemblage style without mergers - a compositional approach that adds to the artwork's impact with its clear lines and sure geometric delineations. Ruscha - Psychoanalytic analysis Ed Ruscha's Large Trademark with Eight Spotlights (1962) may at first appear to be a cultural snapshot of a piece of recognised movie industry iconography. But within this seemingly simple representation of a familiar symbol lie a plethora of contextualised meaning, sub-meanings and allusions.Within Lacanian psycho-analytic theory, the power of images as vehicles for multiple meaning is central to understanding the creative impulse. According to Kelly Oliver (177):"Lacan establishes a parallel between the figures of metaphor (the substitution ofone term for another, as in 'Juliet is the sun') and metonymy (the substitution of thewhole for the part, and the contiguous relations between chains of signifiers).These are described as the two main axes of language, and they are likened tocondensation and displacement (respectively the condensation of multiplemeanings into a single dream image, and the transfer of libido from one image toanother) . .In other words, for Lacan, the unconscio us is structured like alanguage." Within a Lacanian understanding - Trademark is a potent image reflecting a group consciousness that is interconnected with our own individual identities - and subsequently merging the

Education Master Personal Statement Example | Topics and Well Written Essays - 3000 words

Education Master - Personal Statement Example The enhancement training would allow me to understand the special needs of my students in prison and with the deaf and dyslexic, and develop better teaching strategies that will truly respond to my students' needs. This paper documents the plan, the learning process and the outcomes of learning Rehabilitation Counseling. It describes how I went through the learning experience and applied principles and theories in psychology and education and present insights on the experiences. I intended to enroll in a short term 3 day-long course on Rehabilitation Counselling because it would enskill me to address special concerns of my clients. Rehabilitation Counselling course is a special program for individuals who "perform counseling on persons with disabilities and their families to identify and resolve them." These counselors "plan individual rehabilitation programs and provide support and direction during rehabilitation process, arrange for medical and psychological evaluation and vocational testing and/or work evaluation and place clients in jobs" (Wisconsin DWD) Parts of the methodology for the formal training in rehabilitation counselling is a simulation exercise or role playing and going through training assessment or evaluation. It was my belief that going through short term course would not be enough to master the skill especially given a short span of time, so that I intended to supplement this an on-line counseling course and with my own research activities, through books, video and interview with other counselors and experts. The learning process would not end in just acquiring the skill and passing the skills training assessment. I also intended to go through the licensing process to legally practice counselling and be an accredited member of the British Association for Counselling and Psychotherapy (BACP) or other licensing and accreditation organizations where my practice is covered. The Learning Process I enrolled in a short term 3-day introductory course in Rehabilitation Counseling at Thomas Danby College last April 20-22, 2007. I also enrolled at an on-line counseling program offered by Tipperary Institute at Thurles Tipperary which also started in April. My classes in Tippery are expected to end on September 15, 2007 although this is through the Internet. At this writing online course at Tippery is ongoing but the short term course at Thomas Danby College was completed. The analysis of the learning process will particularly center on the completed short term introductory course on Rehabilitation Counseling at Thomas Danby College. The course focused on these modules: foundations of counseling, principles and techniques of rehabilitation counseling, clinical techniques, assessment techniques and practicum activity. The course was packaged to suit the schedule of working counselors, which luckily was a big advantage on my part. The class sessions were a continuous three (3) whole day activities which turned out to be very convenient

Contingency Perspective Of Leadership Essay Example | Topics and Well Written Essays - 750 words

Contingency Perspective Of Leadership - Essay Example Leadership is considered as a controlling power that is bestowed on a person to achieve certain aims. The leader, having specific aims, is now responsible to achieve those aims. There are a number of leadership perspectives available to individuals. A true and successful leader, however, is the one who realizes the suitability and effectiveness of certain leadership style on the team and environment he is working with. Contingency perspective of leadership provides such a mechanism where leaders have to be flexible in their attitudes, working and demands. This perspective involves the analysis of situation on which the leader has to decide on things. The contingency approach of leadership is associated with the path-goal theory more closely than others (Dubrin, 2001 pp. 32-34). The path-goal theory follows the same idea as defined in the expectancy theory of motivation. The main idea is the relationship or connection between the leaders behaviours on employee participation and perfor mance in achieving the tasks assigned to them. The path-goal theory is more inclined towards the rewards in order to attain higher motivation of employees and higher performance efficiency. Path-goal theory emphasizes on servant leaders, who are less dominating and more helpful. The leaders working under the contingency perspective of leadership are more like coaches, facilitators and guides to the employee team. Directive leadership which points towards the task-oriented leadership. The leader explains the task clearly, provides a framework to follow and describes the standards against which the performance would be measured. This style of leadership use rewards and payments as a tool of motivation. Supportive Leadership may also be termed as people-oriented leadership. The leader following this style is supportive in actions, words and behaviours. A supportive leader is respectful, honest and pleasant with the employees. Having a friendly attitude,

Interim Financial Reporting Essay Example | Topics and Well Written Essays - 2000 words

Interim Financial Reporting - Essay Example The fundamental goal of interim financial reporting is to present regular and timely evaluations of a business’s performance. There are certain intrinsic limitations of interim reporting. Owing to the shortened time periods involved, inaccuracies in assessment and allocation are amplified. The consequences of seasonal fluctuations, as well as momentary market circumstances, further limit the dependability, comparability and extrapolative significance of interim reports (Motiwalla, 2003). IAS 34 & Interim Financial Reporting The IFRS had formulated several accounting standards that are supposed to be observed by business organizations while preparing their accounting reports. The accounting standard IAS 34 delineates the requirements for the preparation of interim financial reports. IAS 34 is applicable when a business organisation chooses to issue an interim financial report that is compliant with the IFRSs. ... his standard also recommends codes for recognition and measurement in the preparation of comprehensive or abridged financial statements for a provisional time period. Apt and consistent interim financial reporting enhances the ability of creditors, investors and other financial report users to recognise an organisation’s financial situation and liquidity, as well as its competence to generate income and cash flow (European Commission, 2011, pp. 1-3). IAS 34 does not provide any directive as to what kinds of organisations are supposed to issue interim financial reports, how frequent issuance should be, or after what period following the completion of an interim phase an issuance should be made. Nevertheless, often all across the world, organisations whose shares are listed on exchanges and traded in markets have been required by governments and other authorities, such as securities regulators and stock exchanges, to issue interim financial reports. The International Accounting Standards Board, and later on the International Accounting Standards Committee, has repeatedly persuaded publicly listed organisations to issue interim financial reports. These interim reports are supposed to be compliant with the codes of recognition, disclosure and measurement, as defined in the IAS 34 (Deloitte, 2006, pp. 4-6). Organisations listed on exchanges are particularly pressured to prepare and issue interim financial reports at the end of the first six months of the financial year, and are typically asked to issue their interim financial reports no more than 60 days after to the completion of the interim phase (European Commission, 2011, pp. 6-8). The annual or interim financial reports of organisations are assessed individually to check their compliance with the IFRSs. If an

Two Men Arrested for String of Thefts from U.S. Mail Research Paper

Two Men Arrested for String of Thefts from U.S. Mail - Research Paper Example mails that occurred between January 12, 2012 and March 16, 2012 (U.S. Attorney’s Office 1). These men do not work as United States postal employees, but as employees of a private mail- handling firm, which delivers air parcels to the JFK Post Office. Earlier, during the year, there were several cases of missing items reported to the postal inspectors. The postal inspectors, alongside other FBI agents, launched a thorough investigation on mail handlers, which lasted for several weeks. Their investigation revealed several instances where Wilson and Bennett occasionally moved express mail bags to private locations, where they searched the parcels and stole valuable items and other merchandizes (U.S. Attorney’s Office 1). Police then issued a warrant of arrest for both men. On March 20, 2012, FBI agents arrested both men, and upon being searched, several items, whose descriptions match the missing items, were recovered at their premises. Airmail theft is one of the ways of derailing the lifeblood of the U.S. economy, and stifling personal communication (U.S. Attorney’s Office 1). Airmailing is a significant means of communication between traders, through which they move goods and other items from one region to another, within a short period. When individuals and companies do not receive their mails, they lose trust in the services offered by U.S. postal corporation, which in turn, damages the company’s reputation, thus reducing its market strength against its key rivals, especially from the private sector like the DHL Inc. Additionally, lost items inconvenience businesses by increasing their cost of productions, which make them register significant loses. It is, therefore, necessary to investigate and combat airmail thefts, not only in the U.S., but also in other nations. Mail theft significantly inconveniences both businesses and individuals. This is because they lose their valuable items, which are worth $1

Global logistics Essay Example | Topics and Well Written Essays - 3000 words

Global logistics - Essay Example This paper will present a report to discuss various logistical issues and logistical procedures that should be considered by Middle East Division of MedicalCare International (MEDMI) before commencing the export of pharmaceuticals from Sao Paulo, Brazil and cosmetics from Bangalore, India. This report will discuss various modes of transport and destination ports that can be depended for MEDMI’s supply chain procedures. In order to develop and sustain effective global logistics, the management of MEDMI will have to address environmental issues apart from a number of issues related to logistics networks, inventory handling, organizational relationship, and performance measurement. These issues are discussed below: The global presence of MEDMI will certainly impact the channel structure it chooses for transportation between Jebel Ali and ports in Sao Paulo and Bangalore. Transportation between these ports involves longer distance leading to greater levels of risks, uncertainties and costs. Complexity of channel relations and costs for logistical operations will increase proportionately or more than proportionately when the firm’s network relation between global supplier, intermediary and customer expand (Gourdin, 2006). Severity of competition in global logistics is one of the main issues the management of MEDMI will have to address before starting exporting from Bangalore and Sao Paulo. Firms playing in global logistics compete with others through product differentiation or other strategies, and therefore, it is important to evaluate those factors that contributing to the competitive advantages of its competitors. Marketing strategies and distribution systems are normally interrelated. Well before arranging the export from Bangalore and Sao Paulo, managers of MEDMI have to take strategic decision regarding what type of distribution will be most supportive of its marketing strategies. There are three modes of distribution;

The programme for the harmonisation of Company Law in the European Essay

The programme for the harmonisation of Company Law in the European Union - Essay Example The first Commission Proposal for a Publicity Directive can be traced back to the year 1964, and the beginning of the EC harmonisation in Company Law is marked by the issuance of this First Directive in the year 1968. The first directive aimed at harmonising publicity prerequisites applying to companies, the conditions under which company transactions will be considered valid and the rules relating of the nullity of companies. The Second Directive, issued eight years later, deals with the establishment of public limited liability companies and the maintenance and adjustment of their capital. Also, it had an approach different from the first directive— many of the provisions lay down elaborate procedures rather than simply directing the Member States to make legislations to a certain end. Thus, for this reason, it has been the object of criticism in some circles. However, undeniably, this directive is of immense importance, represents a significant step towards company law harmonization in the European Community. Soon after the Second Directive, the Third and Fourth directives were issued. The Third company law directive presented a new framework for conducting cross-border commercial activities. It had provisions for co-ordination of the procedures applying to internal mergers within Member States. The Fourth directive was concerned with disclosure of financial information and the contents of a company’s annual accounts. It acts complementarily with the First Directive and is supplemented by the Seventh Directive, which deals with group accounts.

The Extent to Which Developmental Psychology Has Been Able to Contribute to Improving Children’s Lives Essay Example for Free

The Extent to Which Developmental Psychology Has Been Able to Contribute to Improving Children’s Lives Essay This essay will explore how developmental psychology has improved the lives of children diagnosed with specific learning difficulties (SpLD). It will explore how these improvements have been made from diagnosis to assessments, consequences to intervention. Dyslexia refers to a specific difficulty in learning to read and write. However this is not the only difficulty that children with dyslexia experience and there are variations of their symptoms. These problems appear to stem from fundamental difficulties in the rapid processing and sequencing of phonological information in short term memory. These children also have difficulties with associations with letters and their sounds. Learning their left from right also is difficult. In the 1970s-80s it was thought Dyslexia was a label given to rich parents underachieving children as an excuse for their poor performance. Contempory definitions of dyslexia combine a discrepancy approach with definition indicators. The discrepancy approach is key in how educational psychologists identify dyslexia. Dyspraxia is used to describe the symptoms of people who experience problems in oorganising their movements and may have problems with thought, perception and language. Dyspraxia is also known as developmental co-ordination disorder (DCD). Dyspraxia can make written work for children in school very difficult as it has a huge impact on the visual field with writing. Alongside this the mental affects a child may experience in school from being bullied for their condition may then effect their performance in the classroom. Due to late start in researching of DCD, intervention is not often attempted until a child reaches school age. Cormorbidity, where two disorders or illnesses occur in the same peron simultaneously or sequentially, often happens with dyslexia or dyspraxia. Kaplan (2001) found that children with reading difficulties were 51. 6% more likely to have another developmental difficulty. If all these conditions have a common cause then cormorbidity would not be present. Kaplin (2001) states that a combintation of learning difficulties may be a result of atypical brain development (ABD). It is possible that two people with the same atypical brain development may present with differing symptoms as a result of the influence of environmental factors. As a result it is difficult to identify a single biological cause for SpLD. Developmental psychologists have been able to identify a range of factors that appear to contribute to the causes of SpLDs. Heritability may be another factor which influences the presentation of SpLDs. Dyslexia and dyspraxia both appear to have a familial form where parents and siblings also present with these conditions. The extent of heritability has been highlighted through the use of twin studies; both monozygotic and dizygotic. Stevenson (1999) found that heritability was between 46 and 74 per cent chance, which highlights there is some influence from environment as well as genetic factors. Further research has highlighted how some genes on the chromosome are associated with phonological processing and other genes on other chromosomes are associated with reading. Assessments are a key way developmental psychologists are able to further understand children with SpLD, and can then identify and conclude the severity of the SpLD. It is through assessment that developmental psychologists can start to do the most help with improving childrens lives. By assessing them for their SpLD the psychologist can start to make way for the child to gain extra support in school and at home. Assessments for dyslexia such as those which use the discrepancy model assume that it is valid, which is not necessarily the case as there is evidence that children with very different IQ scores can achieve similar reading scores. The assessment is only a snap shot of how the child performed at that time on that particular day. Developmental psychologists have put forward a new method of assessment which would highlight the childs severe and persistent problems when learning to read and write. Such an assessment would assist the child in finding coping stratergies and different ways of learning in order for them to excel as well as a child without such a form of SpLD, it can also speed up intervention, which could allow the child to be assisted earlier on in their school career. When assessing dyspraxia psychologists it can be difficult to identify as the signs of dyspraxia overlap with other SpLD’s. Dyspraxia is often assessed and treated by medical personnel rather than psychologists as with dyslexia, despite signs and causes impacting similarly on the child education and learning abilities. It is usually due to the social impact which dyspraxia has on the child which dyslexia does not which requires medical attention. A large number of professionals are involved in aiding children with dyspraxia including educational psychologists who assess the motor and perceptual development skills such as sequencing and organisation. A DVMI or movement ABC test will be used in order to identify pecific motor skills. The consequences of living with a SpLD for a child can range from social exclusion to self esteem issues. Riddick (1996) found that children with SpLDs often experienced social exclusion; they felt excluded from activities because of their difficulties with reading and writing. Riddick also found that children who were had dyslexia were more likely to befriend other dyslexics which can aid social inclusion. Qualitative and quantitative studies have suggested that people with SpLDs experience emotional and educational consequences. Many children with a SpLD experience soxial exclusion, the self exteem of children with SpLDs is low especially with respect to academic self concept. Children with SpLDs are over represented in statistics on children with depression although the degree of prevelance is not clear. Many children with SpLDs experience reduced academic motivation. Developmental psychologists design and evaluate interventions which can aim to improve the behavioural symptoms of SpLDs. Although intervention often occurs after identification, early intervention in the case of children ‘at risk’ of SpLD is the best approach. School based interventions that aim to improve literacy attainment suggests that intervention needs to be highly personalised and structured if it is to be affective. In order to maximise the long term impact of intervention it is suggested that programmes also need to be intensive and preventative. Given the cost of implications of personalised tuition in the classroom psychologists are evaluating the potential of computers to act as teaching assistants to support children with learning difficulties.

Robotic Cultivation System Design

Robotic Cultivation System Design Abstract Population of the world is growing rapidly and this rapid growth demands more food. Due to the advancement and revolution boost in petrochemical industries, the agriculture industry also have some developments, but at the cost of soil, environment, and our health. The conventional agriculture industry needs sustainability, improvement, robustness, and automation. Moreover, to keep pace with the requirements, we require machinery support that can perform its tasks more precisely and swiftly, according to the given instruction. In our proposed idea of Robotic Cultivation System, the crux objective is to flourish your garden without any supervision of the farmers. This system works effectively in such areas where farmers face difficulties in farming. The system is designed to perform many tasks including weeding tool, soil moisture, seed injecting, and watering. All these parameters are remotely accessible through any device and continues update of the aforementioned parameters on the w ebsite. Robotic Cultivation System can operate on grid as well as on renewable solar energy. However, it can be scalable from your backyard to agriculture industry. Subsequently, due to less energy consumption and its vital properties, Robotic Cultivation System will be a great revolution in agribusiness. Introduction Pakistan is an agricultural country, where cultivation plays a vital role to maintain the economy. Population of our country is growing rapidly and this rapid growth demands more food. The number of agriculture universities and lack of awareness and research, also has a great influence on the production of food. Developing countries are converting farmer hardship into modern scientific methods by using automation that works more accurately, swiftly, and produce more yield per acre. Farmers waste a lot of water to irrigate their lands which affects the growth of crops, therefore the new conventional paradigm has to devise some method to control the wastage of water. The inadequate quality control measures and poor seeding also affects the augmentation of food production. All these repercussions need to be revamped in order to get fresh and healthy crops. Moreover, through research and past knowledge we can use less human struggle to cover more land per cultivation reducing hectic and tiresome practices. The use of chemicals, which are being used to kill pesticides, herbicides, and fungicides, also needs to be curbed, as these chemicals lead to serious health hazards. Limited and unleveled land with low per acre yield are prominent factors which we are facing in production of food crops. Now-a- days engineers have designed various methods which can help the farmers to overcome these limitations and increase food production. Being an agricultural country, we need a lot of improvement and prosperity to overcome the major problems in cultivation system of Pakistan. When presented with the current food production system one cannot look past how broken it is. We have surrendered our knowledge in control over, how our food been produced and as a result we are destroying our health and the environment. We have to change that by an idea of new pyridine of food production. The idea lies in the intersection of automation, the open source DIY maker movement and small scale polygraph farming. The Robotic Cultivation System is designed to move around X, Y, and Z space, day and night, seven days a week growing food. The system precisely sows seeds in any pattern and density you want and waters them efficiently, the exact amount that each plant needs based on its type, according to the plants age, soil, local weather conditions and your growing preferences. The Robotic Cultivation System can grow variety of crops, all in the same area, at the same time. Each plant is cared individually in an optimize and automated way. By growing many type of plants at onc e, your garden will benefit from the natural advantages of poly cropping and croporation. Using the onboard camera and advance computer vision software, the system intelligently monitors your garden. With the soil sensor, it tells how your gardens moisture level changes over time, enabling smarter and more efficient farming with each passing season. By this system your garden will flourish, and your plants will frieze. Moreover, you can control Robotic Cultivation System with powerful web based interface. The hardware design of the system is scalable, from your backyard to agriculture industry. Also, it can operate on renewable solar power. The system is perfect to get started in a small space, can be placed outdoors or in a green house or even on a roof top. Objectives Construction and Implementation of Cultivation Robot. It has two operating nodes, off grid and on grid. Remote access through any device and continues update of four parameters such as, moisture of soil before and after watering, quantity of water, and parameter measuring time stamp on website. Online access of weather conditions of the area to define the watering pattern for different vergtion in order to maintain moisture level of the area. Cost analysis of the project based on the real time data collected parameter in step number three. Optional Yield a vegetation pattern of a person and recommend to grow vegetable needed for the person for food using age, blood sugar, and weight. One person has the input over the cycle of one year (Diet Chart). Plant inspection using Digital Image Processing.

To Kill a Mockingbird by Harper Lee :: essays research papers

"To Kill A Mockingbird" by Harper Lee is a book that i would reccomend for anyone to read. This book talks about the issues of prejidice and how it affects the community. When he was nearly thirteen, my brother Jem broke his arm badley at the elbow. When it healed, and Jems's fears of never being able to play football were assuaged, he was seldom self-conscious about his injury. His left arm was somewhat shorter than his right; when he stood or walked, the back of his hand was at right angles to his body, his thumb parallel to his thigh. He couldn't have cared less as long as he could pass and punt. When enogh years had gone by to enable us to look back on them, we sometimes discussed the events leading to his accident. I maintain that the Ewell's started ti all, but Jem , who was four years my senior, said it atarted long before that. He said it began the summer Dill came to us, when Dill first gave us the idea of making Boo RAdley come out. this book sucks dick i just wish that there were some kind of site that poor people could go to, u know to find essays that they might need help on. But no everyone is trying to get a little green out of things. Well you know what i am going to find a site and than rub it in ya'll faces. Ya you bot that right! Well my name is Marcia Bryant and i hope some one reads this shit and relizes that i don't have a damn credit card. I'm sixteen fucking years old, What am i going to do wit a credit card. I mean come on. You people should know that the majority of people looking for essays r students. fi hope that all the people running these essay web site burn in hell, it is only common sense here not rocket science.haluioueowijkfdsoufiudokfjkmniidlm foidom oifms oidmfkjoia flioaidj,dm foidm,fl lkfm,d ndwp04 rlksm,mkjsfj f8u9kjkjfksjlojslkjslja;lsj;ljsljkasjl;fkjslajljfljfljsdlkjfldksjflkjsaljdlksjljdlfjksdlfjskljfljsdfkljsdlkfjlsdkjflksdjflsjflkjsalkjljalkjdflaj;ldkfjlasjfljsdlfkjdkslfj s;fk jdlkf lkdj f df df dslkf ;kjds fjk ;saklf df f d flkjd;lkf aklj fjlka lk;f dlkf kla;j;fjaf;iuweopruiweuroiwuri wriwjfsdpuifpsiodu[fosudfipousdpoivfu po u ofu [psdufu po udfp[ ouf o opusdfp[uaod[puapou opfua[pouf poudfpousafopuasdpofupodsaufpoudspofupodsufpousd jfijsdlkhf;ljkshdflkjlkfj kjdfl;j d jsklfj;lskfjkldsfj;lksljf;jdkjf;dsjf;ds jsdlfkjds klfjsldkjflk;dsfjlk;jdsljflkjdlkfjklsd flkj kljdspfiuaisufpdsuifoupovupoczxupvoupjspkfj;suv;pc vefduopuivgop ergupioufcjg fsdgj fpufp p ou9opuf u o9u pou fopsdu fojdspofias ofuods ofipodu fpodsuifo ipodsuifp odsu fopudsfoids;lkfo ofd p fudfopuauspofus o o pofduspofusp9ofgksjf uodofus aasfoiaou sfdskjfdsopufduspfo f "To Kill A Mockingbird" by Harper Lee is a book that i would reccomend for anyone to read.

Inuit Culture over Time Essay example -- canada, canadian

The Inuit people of Nunavik in Quebec province in Canada had lived in the harsh environment of the arctic for thousands of years with little contact from the outside world, but the Europeans have changed that, and the Inuit people have had to adapt to contact with other cultures and new technology. In the beginning of the Inuit Culture, the people had to be extremely resourceful in order to help the cope with the harsh environment of the Arctic, but when the Europeans arrived they made environmental changes and they also forced cultural changes upon the Inuit people. Now the Inuit people of Canada are forming their own governmental system which will allow them to protect and gain wealth from their own resources. The geographic features of Nunavik hugely influence how the Inuit people obtain food and shelter because it is such a harsh environment. As modern technologies became more prevalent, traditional methods of surviving were forgotten for many reasons. Pita Aatami, the pres ident of the Makavik Corporation, is a tribal leader who, along with other tribal leaders, has a vision of incorporating modern technologies with traditional values. The Inuit people of Nunavik had a very distinct culture before the Europeans arrived. The modes of transportation consisted of dog sleds, and kayaks made of skin and bone. Because of the cold climate, they ate animals from the ocean and rivers such as Beluga Whales, seals, and fish. In the summer, they found berries to eat. There are no trees in the arctic, so they used other resources to build shelter. They lived mostly in igloos, made of ice blocks and sealed by pouring water over them and letting it freeze. They also built sheds and other buildings out of whale bones and various animal... ...e Canadian government for the Nunavik Corporation’s plan for a Nunavik Regional Government. She first had the idea for the self government when she was vice-president of the Nunavik Corporation. She is now a board member on the Board of Nasavvik (an Inuit Health and Changing Environment agency) and is also on the Circumpolar Inuit Health Steering Committee. She has been working on Nunavik self government since 2002. The Inuit people of Nunavik have used their incredible resourcefulness to survive in the harsh environment of the Tundra and have a rich culture, but with the arrival of European technology, government and environmental destruction, their way of life has been threatened and much of their old culture has been lost. They are working to preserve their culture by passing it through education, and negotiating for more control so that they can do that.

Amy Tans Mother Tongue and Jimmy Santiago Bacas Coming Into Language

Amy Tan's Mother Tongue and Jimmy Santiago Baca's Coming Into Language In the course of reading two separate texts it is generally possible to connect the two readings even if they do not necessarily seem to be trying to convey the same message. The two articles, â€Å"Mother Tongue† by Amy Tan, and â€Å"Coming Into Language† by Jimmy Santiago Baca, do have some very notable similarities. They are two articles from a section in a compilation about the construction of language. The fact that these two articles were put into this section makes it obvious that they will have some sort of connection. This essay will first summarize the two articles and break them down so that they are easily comparable; also, this essay will compare the two articles and note similarities and differences the texts may have. The first article is â€Å"Mother Tongue† by Amy Tan. The author tells a story of her relationship with her mother whose English is poor in comparison to that of most Americans. The author is well versed in English since she was schooled in the United States. (Tan 37) The author begins with an introduction to her mother’s style of language. She explains that it is her language that she and her mother share, and it is a â€Å"language of intimacy.† (36) Tan makes sure to point out that it is not difficult for her to understand what her mother says. After this introduction Tan begins to tell the reader about stories of how her mother’s limited English had affected her. She writes that she had been ashamed of her mother’s unintelligible English. Her story is about a time when she had to make a phone call for her mother and how she had noticed the way others passed her mother off as a nuisance. Her next story had a similar... ...eers slightly when he goes back to when he was seven after describing a time when he was seventeen. He also tells the story completely through his own eyes, while Tan attempts to see things as her mother does. This is the main difference between the two articles. The conclusions that can be drawn based on the two articles are similar as well. Both articles seem to conclude that language shouldn’t be a barrier for those who do not have a complete grasp of it. Baca wishes that those who are illiterate would try to learn to write because writing can help unleash emotions, while Tan wants people to understand that her mother is not disabled, but rather enriched with her knowledge of English. Both arguments that are presented are convincing. These arguments can appeal to a wide range of people and motivate the general public to be more understanding.

Reaction Paper: Made in Dagenham Film Essay

In the film that we’ve watched entitled Made in Dagenham, we have seen how powerful strikes can be. It is done so that the rights of the workers will be upheld, and that, only upon compliance of the Legal Requirements may it be declared a valid strike. Many are the reasons why workers would engage in such an activity, one of which was the discrimination of gender which the film presented. We have also seen in the film how it would take one brave union leader to lead a strike in upholding the rights of the workers and that engaging in a strike would require sacrifice in the part of the striking employees since they are not entitled to payment of wages for unworked days during the period of the strike. We have seen the struggles they had between their families during those days. Also, the film showed an application of the valid ground for strike or lockout, that is, strike should be a means of last resort after they have exerted all efforts to resolve the unfair labor practices. It was seen in the film when the two women representatives had a meeting with the mediation board in resolving the discrimination of gender by paying the female workers lower wages than the male workers. What is most amazing was that the 1968 Ford Dagenham strike led to the establishment of the Equal Pay Act in 1970, which banned the discrimination on pay and working conditions between men and women.

Prelude to Foundation Chapter 13 Heatsink

AMARYL, YUGO-†¦ A mathematician who, next to Hari Seldon himself, may be considered most responsible for working out the details of psychohistory. It was he who†¦ †¦ Yet the conditions under which he began life are almost more dramatic than his mathematical accomplishments. Born into the hopeless poverty of the lower classes of Dahl, a sector of ancient Trantor, he might have passed his life in utter obscurity were it not for the fact that Seldon, quite by accident, encountered him in the course of†¦ Encyclopedia Galactica 61. The Emperor of all the Galaxy felt weary-physically weary. His lips ached from the gracious smile he had had to place on his face at careful intervals. His neck was stiff from having inclined his head this way and that in a feigned show of interest. His ears pained from having to listen. His whole body throbbed from having to rise and to sit and to turn and to hold out his hand and to nod. It was merely a state function where one had to meet Mayors and Viceroys and Ministers and their wives or husbands from here and there in Trantor and (worse) from here and there in the Galaxy. There were nearly a thousand present, all in costumes that varied from the ornate to the downright outlandish, and he had had to listen to a babble of different accents made the worse by an effort to speak the Emperor's Galactic as spoken at the Galactic University. Worst of all, the Emperor had had to remember to avoid making commitments of substance, while freely applying the lotion of words without substan ce. All had been recorded, sight and sound-very discreetly-and Eto Demerzel would go over it to see if Cleon, First of that Name, had behaved himself. That, of course, was only the way that the Emperor put it to himself. Demerzel would surely say that he was merely collecting data on any unintentional self-revelation on the pan of the guests. And perhaps he was. Fortunate Demerzel! The Emperor could not leave the Palace and its extensive grounds, while Demerzel could range the Galaxy if he wished. The Emperor was always on display, always accessible, always forced to deal with visitors, from the important to the merely intrusive. Demerzel remained anonymous and never allowed himself to be seen inside the Palace grounds. He remained merely a fearsome name and an invisible (and therefore the more frightening) presence. The Emperor was the Inside Man with all the trappings and emoluments of power. Demerzel was the Outside Man, with nothing evident, not even a formal title, but with his fingers and mind probing everywhere and asking for no reward for his tireless labors but one-the reality of power. It amused the Emperor-in a macabre sort of way-to consider that, at any moment, without warning, with a manufactured excuse or with none at all, he could have Demerzel arrested, imprisoned, exiled, tortured, or executed. After all, in these annoying centuries of constant unrest, the Emperor might have difficulty in exerting his will over the various planets of the Empire, even over the various sectors of Trantor-with their rabble of local executives and legislatures that he was forced to deal with in a maze of interlocking decrees, protocols, commitments, treaties, and general interstellar legalities-but at least his powers remained absolute over the Palace and its grounds. And yet Cleon knew that his dreams of power were useless. Demerzel had served his father and Cleon could not remember a time when he did not turn to Demerzel for everything. It was Demerzel who knew it all, devised it all, did it all. More than that, it was on Demerzel that anything that went wrong could be blamed . The Emperor himself remained above criticism and had nothing to fear-except, of course, palace coups and assassination by his nearest and dearest. It was to prevent this, above all, that he depended upon Demerzel. Emperor Cleon felt a tiny shudder at the thought of trying to do without Demerzel. There had been Emperors who had ruled personally, who had had a series of Chiefs of Staff of no talent, who had had incompetents serving in the post and had kept them-and somehow they had gotten along for a time and after a fashion. But Cleon could not. He needed Demerzel. In fact, now that the thought of assassination had come to him-and, in view of the modern history of the Empire, it was inevitable that it had come to him-he could see that getting rid of Demerzel was quite impossible. It couldn't be done. No matter how cleverly he, Cleon, would attempt to arrange it, Demerzel (he was sure) would anticipate the move somehow, would know it was on its way, and would arrange, with far superior cleverness, a palace coup. Cleon would be dead before Demerzel could possibly be taken away in chains and there would simply be another Emperor that Demerzel would serve-and dominate. Or would Demerzel tire of the game and make himself Emperor? Never! The habit of anonymity was too strong in him. If Demerzel exposed himself to the world, then his powers, his wisdom, his luck (whatever it was) would surely desert him. Cleon was convinced of that. He felt it to be beyond dispute. So while he behaved himself, Cleon was safe. With no ambitions of his own, Demerzel would serve him faithfully. And now here was Demerzel, dressed so severely and simply that it made Cleon uneasily conscious of the useless ornamentation of his robes of state, now thankfully removed with the aid of two valets. Naturally, it would not be until he was alone and in dishabille that Demerzel would glide into view. â€Å"Demerzel,† said the Emperor of all the Galaxy, â€Å"I am tired!† â€Å"State functions are tiring, Sire,† murmured Demerzel. â€Å"Then must I have them every evening?† â€Å"Not every evening, but they are essential. It gratifies others to see you and to be taken note of by you. It helps keep the Empire running smoothly.† â€Å"The Empire used to be kept running smoothly by power,† said the Emperor somberly. â€Å"Now it must be kept running by a smile, a wave of the hand, a murmured word, and a medal or a plaque.† â€Å"If all that keeps the peace, Sire, there is much to be said for it. And your reign proceeds well.† â€Å"You know why-because I have you at my side. My only real gift is that I am aware of your importance.† He looked at Demerzel slyly. â€Å"My son need not be my heir. He is not a talented boy. What if I make you my heir?† Demerzel said freezingly, â€Å"Sire, that is unthinkable. I would not usurp the throne. I would not steal it from your rightful heir. Besides, if I have displeased you, punish me justly. Surely, nothing I have done or could possibly do deserves the punishment of being made Emperor.† Cleon laughed. â€Å"For that true assessment of the value of the Imperial throne, Demerzel, I abandon any thought of punishing you. Come now, let us talk about something. I would sleep, but I am not yet ready for the ceremonies with which they put me to bed. Let us talk.† â€Å"About what, Sire?† â€Å"About anything.-About that mathematician and his psychohistory. I think about him every once in a while, you know. I thought of him at dinner tonight. I wondered: What if a psychohistorical analysis would predict a method for making it possible to be an Emperor without endless ceremony?† â€Å"I somehow think, Sire, that even the cleverest psychohistorian could not manage that.† â€Å"Well, tell me the latest. Is he still hiding among those peculiar baldheads of Mycogen? You promised you would winkle him out of there.† â€Å"So I did, Sire, and I moved in that direction, but I regret that I must say that I failed.† â€Å"Failed?† The Emperor allowed himself to frown. â€Å"I don't like that.† â€Å"Nor I, Sire. I planned to have the mathematician be encouraged to commit some blasphemous act-such acts are easy to commit in Mycogen, especially for an outsider-one that would call for severe punishment. The mathematician would then be forced to appeal to the Emperor and, as a result, we would get him. I planned it at the cost of insignificant concessions on our part-important to Mycogen, totally unimportant to us-and I meant to play no direct role in the arrangement. It was to be handled subtly.† â€Å"I dare say,† said Cleon, â€Å"but it failed. Did the Mayor of Mycogen â€Å"He is called the High Elder, Sire.† â€Å"Do not quibble over titles. Did this High Elder refuse?† â€Å"On the contrary, Sire, he agreed and the mathematician, Seldon, fell into the trap neatly.† â€Å"Well then?† â€Å"He was allowed to leave unharmed.† â€Å"Why?† said Cleon indignantly. â€Å"Of this I am not certain, Sire, but I suspect we were outbid.† â€Å"By whom? By the Mayor of Wye?† â€Å"Possibly, Sire, but I doubt that. I have Wye under constant surveillance. If they had gained the mathematician, I would know it by now.† The Emperor was not merely frowning. He was clearly enraged. â€Å"Demerzel, this is bad. I am greatly displeased. A failure like this makes me wonder if you are perhaps not the man you once were. What measures shall we take against Mycogen for this clear defiance of the Emperor's wishes?† Demerzel bowed low in recognition of the storm unleashed, but he said in steely tones, â€Å"It would be a mistake to move against Mycogen now, Sire. The disruption that would follow would play into the hands of Wye.† â€Å"But we must do something.† â€Å"Perhaps not, Sire. It is not as bad as it may seem.† â€Å"How can it be not as bad as it seems?† â€Å"You'll remember, Sire, that this mathematician was convinced that psychohistory was impractical.† â€Å"Of course I remember that, but that doesn't matter, does it? For our purposes?† â€Å"Perhaps not. But if it were to become practical, it would serve our purposes to an infinitely great extent, Sire. And from what I have been able to find out, the mathematician is now attempting to make psychohistory practical. His blasphemous attempt in Mycogen was, I understand, part of an attempt at solving the problem of psychohistory. In that case, it may pay us, Sire, to leave him to himself. It will serve us better to pick him up when he is closer to his goal or has reached it.† â€Å"Not if Wye gets him first.† â€Å"That, I shall see to it, will not happen.† â€Å"In the same way that you succeeded in winkling the mathematician out of Mycogen just now?† â€Å"I will not make a mistake the next time, Sire,† said Demerzel coldly. The Emperor said, â€Å"Demerzel, you had better not. I will not tolerate another mistake in this respect.† And then he added pettishly, â€Å"I think I shall not sleep tonight after all.† 62. Jirad Tisalver of the Dahl Sector was short. The top of his head came up only to Hari Seldon's nose. He did not seem to take that to heart, however. He had handsome, even features, was given to smiling, and sported a thick black mustache and crisply curling black hair. He lived, with his wife and a half-grown daughter, in an apartment of seven small rooms, kept meticulously clean, but almost bare of furnishings. Tisalver said, â€Å"I apologize, Master Seldon and Mistress Venabili, that I cannot give you the luxury to which you must be accustomed, but Dahl is a poor sector and I am not even among the better-off among our people.† â€Å"The more reason,† responded Seldon, â€Å"that we must apologize to you for placing the burden of our presence upon you.† â€Å"No burden, Master Seldon. Master Hummin has arranged to pay us generously for your use of our humble quarters and the credits would be welcome even if you were not-and you are.† Seldon remembered Hummin's parting words when they finally arrived in Dahl. â€Å"Seldon† he had said, â€Å"this is the third place I've arranged as sanctuary. The first two were notoriously beyond the reach of the Imperium, which might well have served to attract their attention; after all, they were logical places for you. This one is different. It is poor, unremarkable, and, as a matter of fact, unsafe in some ways. It is not a natural refuge for you, so that the Emperor and his Chief of Staff may not think to turn their eyes in this direction. Would you mind staying out of trouble this time, then?† â€Å"I will try, Hummin,† said Seldon, a little offended. â€Å"Please be aware that the trouble is not of my seeking. I am trying to learn what may well take me thirty lifetimes to learn if I am to have the slightest chance of organizing psychohistory.† â€Å"I understand,† said Hummin. â€Å"Your efforts at learning brought you to Upperside in Streeling and to the Elders' aerie in Mycogen and to who can guess where in Dahl. As for you, Dr. Venabili, I know you've been trying to take care of Seldon, but you must try harder. Get it fixed in your head that he is the most important person on Trantor-or in the Galaxy, for that matter-and that he must be kept secure at any cost.† â€Å"I will continue to do my best,† said Dors stiffly. â€Å"And as for your host family, they have their peculiarities, but they are essentially good people with whom I have dealt before. Try not to get them in trouble either.† But Tisalver, at least, did not seem to anticipate trouble of any kind from his new tenants and his expressed pleasure at the company he now had-quite apart from the rent credits he would be getting-seemed quite sincere. He had never been outside Dahl and his appetite for tales of distant places was enormous. His wife too, bowing and smiling, would listen and their daughter, with a finger in her mouth, would allow one eye to peep from behind the door. It was usually after dinner, when the entire family assembled, that Seldon and Dors were expected to talk of the outside world. The food was plentiful enough, but it was bland and often tough. So soon after the tangy food of Mycogen, it was all but inedible. The â€Å"table† was a long shelf against one wall and they ate standing up. Gentle questioning by Seldon elicited the fact that this was the usual situation among Dahlites as a whole and was not due to unusual poverty. Of course, Mistress Tisalver explained, there were those with high government jobs in Dahl who were prone to adopt all kinds of effete customs like chairs-she called them â€Å"body shelves†-but this was looked down upon by the solid middle class. Much as they disapproved of unnecessary luxury, though, the Tisalvers loved hearing about it, listening with a virtual storm of tongue-clicking when told of mattresses lifted on legs, of ornate chests and wardrobes, and of a superfluity of tableware. They listened also to a description of Mycogenian customs, while Jirad Tisalver stroked his own hair complacently and made it quite obvious that he would as soon think of emasculation as of depilation. Mistress Tisalver was furious at any mention of female subservience and flatly refused to believe that the Sisters accepted it tranquilly. They seized most, however, on Seldon's. casual reference to the Imperial grounds. When, upon questioning, it turned out that Seldon had actually seen and spoken to the Emperor, a blanket of awe enveloped the family. It took a while before they dared ask questions and Seldon found that he could not satisfy them. He had not, after all, seen much of the grounds and even less of the Palace interior. That disappointed the Tisalvers and they were unremitting in their attempts to elicit more. And, having heard of Seldon's Imperial adventure, they found it hard to believe Dors's assertion that, for her part, she had never been anywhere in the Imperial grounds. Most of all, they rejected Seldon's casual comment that the Emperor had talked and behaved very much as any ordinary human being would. That seemed utterly impossible to the Tisalvers. After three evenings of this, Seldon found himself tiring. He had, at first, welcomed the chance to do nothing for a while (during the day, at least) but view some of the history book-films that Dors recommended. The Tisalvers turned over their book-viewer to their guests during the day with good grace, though the little girl seemed unhappy and was sent over to a neighbor's apartment to use theirs for her homework. â€Å"It doesn't help,† Seldon said restlessly in the security of his room after he had piped in some music to discourage eavesdropping. â€Å"I can see your fascination with history, but it's all endless detail. It's a mountainous heap-no, a Galactic heap-of data in which I can't see the basic organization.† â€Å"I dare say,† said Dors, â€Å"that there must have been a time when human beings saw no organization in the stars in the sky, but eventually they discovered the Galactic structure.† â€Å"And I'm sure that took generations, not weeks. There must have been a time when physics seemed a mass of unrelated observations before the central natural laws were discovered and that took generations.-And what of the Tisalvers?† â€Å"What of them? I think they're being very nice.† â€Å"They're curious.† â€Å"Of course they are. Wouldn't you be if you were in their place?† â€Å"But is it just curiosity? They seem to be ferociously interested in my meeting with the Emperor.† Dors seemed impatient. â€Å"Again†¦ its only natural. Wouldn't you be-if the situation was reversed?† â€Å"It makes me nervous.† â€Å"Hummin brought us here.† â€Å"Yes, but he's not perfect. He brought me to the University and I was maneuvered Upperside. He brought us to Sunmaster Fourteen, who entrapped us. You know he did. Twice bitten, at least once shy. I'm tired of being questioned.† â€Å"Then turn the tables, Hari. Aren't you interested in Dahl?† â€Å"Of course. What do you know about it to begin with?† â€Å"Nothing. It's just one of more than eight hundred sectors and I've only been on Trantor a little over two years.† â€Å"Exactly. And there are twenty-five million other worlds and I've been on this problem only a little over two months.-I tell you. I want to go back to Helicon and take up a study of the mathematics of turbulence, which was my Ph.D. problem, and forget I ever saw-or thought I saw-that turbulence gave an insight into human society.† But that evening he said to Tisalver, â€Å"But you know, Master Tisalver, you've never told me what you do, the nature of your work.† â€Å"Me?† Tisalver placed his fingers on his chest, which was covered by the simple white T-shirt with nothing underneath, which seemed to be the standard male uniform in Dahl. â€Å"Nothing much. I work at the local holovision station in programming. It's very dull, but it's a living.† â€Å"And it's respectable,† said Mistress Tisalver. â€Å"It means he doesn't have to work in the heatsinks.† â€Å"The heatsinks?† said Dors, lifting her light eyebrows and managing to look fascinated. â€Å"Oh well,† said Tisalver, â€Å"that's what Dahl is best known for. It isn't much, but forty billion people on Trantor need energy and we supply a lot of it. We don't get appreciated, but I'd like to see some of the fancy sectors do without it.† Seldon looked confused. â€Å"Doesn't Trantor get its energy from solar power stations in orbit?† â€Å"Some,† said Tisalver, â€Å"and some from nuclear fusion stations out on the islands and some from microfusion motors and some from wind stations Upperside, but half†-he raised a finger in emphasis and his face looked unusually grave-â€Å"half comes from the heatsinks. There are heatsinks in lots of places, but none-none-as rich as those in Dahl. Are you serious that you don't know about the heatsinks? You sit there and stare at me.† Dors said quickly, â€Å"We are Outworlders, you know.† (She had almost said ‘tribespeople,' but had caught herself in time.) â€Å"Especially Dr. Seldon. He's only been on Trantor a couple of months.† â€Å"Really?† said Mistress Tisalver. She was a trifle shorter than her husband, was plump without quite being fat, had her dark hair drawn tightly back into a bun, and possessed rather beautiful dark eyes. Like her husband, she appeared to be in her thirties. (After a period in Mycogen, not actually long in duration but intense, it struck Dors as odd to have a woman enter the conversation at will. How quickly modes and manners establish themselves, she thought, and made a mental note to mention that to Seldon-one more item for his psychohistory.) â€Å"Oh yes,† she said. â€Å"Dr. Seldon is from Helicon.† Mistress Tisalver registered polite ignorance. â€Å"And where might that be?† Dors said, â€Å"Why, it's-† She turned to Seldon. â€Å"Where is it, Hari?† Seldon looked abashed. â€Å"To tell you the truth, I don't think I could locate it very easily on a Galactic model without looking up the coordinates. All I can say is that it's on the other side of the central black hole from Trantor and getting there by hypership is rather a chore.† Mistress Tisalver said, â€Å"I don't think Jirad and I will ever be on a hypership.† â€Å"Someday, Casilia,† said Tisalver cheerfully, â€Å"maybe we will. But tell us about Helicon, Master Seldon.† Seldon shook his head. â€Å"To me that would be dull. Its just a world, like any other. Only Trantor is different from all the rest. There are no heatsinks on Helicon-or probably anywhere else-except Trantor. Tell me about them.† (â€Å"Only Trantor is different from all the rest.† The sentence repeated itself in Seldon's mind and for a moment he grasped at it, and for some reason Dors's hand-on-thigh story suddenly recurred to him, but Tisalver was speaking and it passed out of Seldon's mind as quickly as it had entered.) Tisalver said, â€Å"If you really want to know about heatsinks, I can show you.† He turned to his wife. â€Å"Casilia, would you mind if tomorrow evening I take Master Seldon to the heatsinks.† â€Å"And me,† said Dors quickly. â€Å"And Mistress Venabili?† Mistress Tisalver frowned and said sharply, â€Å"I don't think it would be a good idea. Our visitors would find it dull.† â€Å"I don't think so, Mistress Tisalver,† said Seldon ingratiatingly. â€Å"We would very much like to see the heatsinks. We would be delighted if you would join us too†¦ and your little daughter-if she wants to come.† â€Å"To the heatsinks?† said Mistress Tisalver, stiffening. â€Å"It's no place at all for a decent woman.† Seldon felt embarrassed at his gaffe. â€Å"I meant no harm, Mistress Tisalver.† â€Å"No offense,† said Tisalver. â€Å"Casilia thinks it's beneath us and so it is, but as long as I don't work there, it's no distress merely to visit and show it to guests. But it is uncomfortable and I would never get Casilia to dress properly.† They got up from their crouching positions. Dahlite â€Å"chairs† were merely molded plastic seats on small wheels and they cramped Seldon's knees terribly and seemed to wiggle at his least body movement. The Tisalvers, however, had mastered the art of sitting firmly and rose without trouble and without needing to use their arms for help as Seldon had to. Dors also got up without trouble and Seldon once again marveled at her natural grace. Before they parted to their separate rooms for the night, Seldon said to Dors, â€Å"Are you sure you know nothing about heatsinks? Mistress Tisalver makes them seem unpleasant.† â€Å"They can't be that unpleasant or Tisalver wouldn't suggest taking us on tour. Let's be content to be surprised.† 63. Tisalver said, â€Å"You'll need proper clothing.† Mistress Tisalver sniffed markedly in the background. Cautiously, Seldon, thinking of kirtles with vague distress, said, â€Å"What do you mean by proper clothing?† â€Å"Something light, such as I wear. A T-shirt, very short sleeves, loose slacks, loose underpants, foot socks, open sandals. I have it all for you.† â€Å"Good. It doesn't sound bad.† â€Å"As for Mistress Venabili, I have the same. I hope it fits.† The clothes Tisalver supplied each of them (which were his own) fit fine-if a bit snugly. When they were ready, they bade Mistress Tisalver good-bye and she, with a resigned if still disapproving air, watched them from the doorway as they set off. It was early evening and there was an attractive twilight glow above. It was clear that Dahl's lights would soon be winking on. The temperature was mild and there were virtually no vehicles to be seen; everyone was walking. In the distance was the ever-present hum of an Expressway and the occasional glitter of its lights could be easily seen. The Dahlites, Seldon noted, did not seem to be walking toward any particular destination. Rather, there seemed to be a promenade going on, a walking for pleasure. Perhaps, if Dahl was an impoverished sector, as Tisalver had implied, inexpensive entertainment was at a premium and what was as pleasant-and as inexpensive-as an evening stroll? Seldon felt himself easing automatically into the gait of an aimless stroll himself and felt the warmth of friendliness all around him. People greeted each other as they passed and exchanged a few words. Black mustaches of different shape and thickness flashed everywhere and seemed a requisite for the Dahlite male, as ubiquitous as the bald heads of the Mycogenian Brothers. It was an evening rite, a way of making sure that another day had passed safely and that one's friends were still well and happy. And, it soon became apparent, Dors caught every eye. In the twilight glow, the ruddiness of her hair had deepened, but it stood out against the sea of black-haired heads (except for the occasional gray) like a gold coin winking its way across a pile of coal. â€Å"This is very pleasant,† said Seldon. â€Å"It is,† said Tisalver. â€Å"Ordinarily, I'd be walking with my wife and she'd be in her element. There is no one for a kilometer around whom she doesn't know by name, occupation, and interrelationships. I can't do that. Right now, half the people who greet me†¦ I couldn't tell you their names. But, in any case, we mustn't creep along too slowly. We must get to the elevator. It's a busy world on the lower levels.† They were on the elevator going down when Dors said, â€Å"I presume, Master Tisalver, that the heatsinks are places where the internal heat of Trantor is being used to produce steam that will turn turbines and produce electricity.† â€Å"Oh, no. Highly efficient large-scale thermopiles produce electricity directly. Don't ask me the details, please. I'm just a holovision programmer. In fact, don't ask anyone the details down there. The whole thing is one big black box. It works, but no one knows how.† â€Å"What if something goes wrong?† â€Å"It doesn't usually, but if it does, some expert comes over from somewhere. Someone who understands computers. The whole thing is highly computerized, of course.† The elevator came to a halt and they stepped out. A blast of heat struck them. â€Å"It's hot,† said Seldon quite unnecessarily. â€Å"Yes, it is,† said Tisalver. â€Å"That's what makes Dahl so valuable as an energy source. The magma layer is nearer the surface here than it is anywhere else in the world. So you have to work in the heat.† â€Å"How about air-conditioning?† said Dors. â€Å"There is air-conditioning, but it's a matter of expense. We ventilate and dehumidify and cool, but if we go too far, then we're using up too much energy and the whole process becomes too expensive.† Tisalver stopped at a door at which he signaled. It opened to a blast of cooler air and he muttered, â€Å"We ought to be able to get someone to help show us around and he'll control the remarks that Mistress Venabili will otherwise be the victim of†¦ at least from the men.† â€Å"Remarks won't embarrass me,† said Dors. â€Å"They will embarrass me,† said Tisalver. A young man walked out of the office and introduced himself as Hano Linder. He resembled Tisalver quite closely, but Seldon decided that until he got used to the almost universal shortness, swarthiness, black hair, and luxuriant mustaches, he would not be able to see individual differences easily. Lindor said, â€Å"I'll be glad to show you around for what there is to see. It's not one of your spectaculars, you know.† He addressed them all, but his eyes were fixed on Dors. He said, â€Å"It's not going to be comfortable. I suggest we remove our shirts.† â€Å"It's nice and cool in here,† said Seldon. â€Å"Of course, but that's because we're executives. Rank has its privileges. Out there we can't maintain air-conditioning at this level. That's why they get paid more than I do. In fact, those are the best-paying jobs in Dahl, which is the only reason we get people to work down here. Even so, it's getting harder to get heatsinkers all the time.† He took a deep breath. â€Å"Okay, out into the soup.† He removed his own shirt and tucked it into his waistband. Tisalver did the same and Seldon followed suit. Linder glanced at Dors and said, â€Å"For your own comfort, Mistress, but it's not compulsory.† â€Å"That's all right,† said Dors and removed her shirt. Her brassiere was white, unpadded, and showed considerable cleavage. â€Å"Mistress,† said Lindor, â€Å"That's not-† He thought a moment, then shrugged and said, â€Å"All right. We'll get by.† At first, Seldon was aware only of computers and machinery, huge pipes, flickering lights, and flashing screens. The overall light was comparatively dim, though individual sections of machinery were illuminated. Seldon looked up into the almost-darkness. He said, â€Å"Why isn't it better lit?† â€Å"It's lit well enough†¦ where it should be,† said Lindor. His voice was well modulated and he spoke quickly, but a little harshly. â€Å"Overall illumination is kept low for psychological reasons. Too bright is translated, in the mind, into heat. Complaints go up when we turn up the lights, even when the temperature is made to go down.† Dors said, â€Å"It seems to be well computerized. I should think the operations could be turned over to computers altogether. This sort of environment is made for artificial intelligence.† â€Å"Perfectly right,† said Lindor, â€Å"but neither can we take a chance on any failures. We need people on the spot if anything goes wrong. A malfunctioning computer can raise problems up to two thousand kilometers away.† â€Å"So can human error. Isn't that so?† said Seldon. â€Å"Oh. yes, but with both people and computers on the job, computer error can be more quickly tracked down and corrected by people and, conversely, human error can be more quickly corrected by computers. What it amounts to is that nothing serious can happen unless human error and computer error take place simultaneously. And that hardly ever happens.† â€Å"Hardly ever, but not never, eh?† said Seldon. â€Å"Almost never, but not never. Computers aren't what they used to be and neither are people.† â€Å"That's the way it always seems,† said Seldon, laughing slightly. â€Å"No, no. I'm not talking memory. I'm not talking good old days. I'm talking statistics.† At this, Seldon recalled Hummin talking of the degeneration of the times. â€Å"See what I mean?† said Lindor, his voice dropping. â€Å"There's a bunch of people, at the C-3 level from the looks of them, drinking. Not one of them is at his or her post.† â€Å"What are they drinking?† asked Dors. â€Å"Special fluids for replacing electrolyte loss. Fruit juice.† â€Å"You can't blame them, can you?† said Dors indignantly. â€Å"In this dry heat, you would have to drink.† â€Å"Do you know how long a skilled C-3 can spin out a drink? And there's nothing to be done about it either. If we give them five-minute breaks for drinks and stagger them so they don't all congregate in a group, you simply stir up a rebellion.† They were approaching the group now. There were men and women (Dahl seemed to be a more or less amphisexual society) and both sexes were shirtless. The women wore devices that might be called brassieres, but they were strictly functional. They served to lift the breasts in order to improve ventilation and limit perspiration, but covered nothing. Dors said in an aside to Seldon, â€Å"That makes sense, Hari. I'm soaking wet there.† â€Å"Take off your brassiere, then,† said Seldon. â€Å"I won't lift a finger to stop you.† â€Å"Somehow,† said Dors, â€Å"I guessed you wouldn't.† She left her brassiere where it was. They were approaching the congregation of people-about a dozen of them. Dors said, â€Å"If any of them make rude remarks, I shall survive.† â€Å"Thank you,† said Lindor. â€Å"I cannot promise they won't.-But I'll have to introduce you. If they get the idea that you two are inspectors and in my company, they'll become unruly. Inspectors are supposed to poke around on their own without anyone from management overseeing them.† He held up his arms. â€Å"Heatsinkers, I have two introductions to make. We have visitors from outside-two Outworlders, two scholars. They've got worlds running short on energy and they've come here to see how we do it here in Dahl. They think they may learn something.† â€Å"They'll learn how to sweat!† shouted a heatsinker and there was raucous laughter. â€Å"She's got a sweaty chest right now,† shouted a woman, â€Å"covering up like that.† Dors shouted back, â€Å"I'd take it off, but mine can't compete with yours.† The laughter turned good-natured. But one young man stepped forward, staring at Seldon with intense deep-set eyes, his face set into a humorless mask. He said, â€Å"I know you. You're the mathematician.† He ran forward, inspecting Seldon's face with eager solemnity. Automatically, Dors stepped in front of Seldon and Lindor stepped in front of her, shouting, â€Å"Back, heatsinker. Mind your manners.† Seldon said, â€Å"Wait! Let him talk to me. Why is everyone piling in front of me?† Lindor said in a low voice, â€Å"If any of them get close, you'll find they don't smell like hothouse flowers.† â€Å"I'll endure it,† said Seldon brusquely. â€Å"Young man, what is it you want?† â€Å"My name is Amaryl. Yugo Amaryl. I've seen you on holovision.† â€Å"You might have, but what about it?† â€Å"I don't remember your name.† â€Å"You don't have to.† â€Å"You talked about something called psychohistory.† â€Å"You don't know how I wish I hadn't.† â€Å"What?† â€Å"Nothing. What is it you want?† â€Å"I want to talk to you. Just for a little while. Now.† Seldon looked at Lindor, who shook his head firmly. â€Å"Not while he's on his shift.† â€Å"When does your shift begin, Mr. Amaryl?† asked Seldon. â€Å"Sixteen hundred.† â€Å"Can you see me tomorrow at fourteen hundred?† â€Å"Sure. Where?† Seldon turned to Tisalver. Would you permit me to see him in your place?† Tisalver looked very unhappy. â€Å"Its not necessary. He's just a heatsinker.† Seldon said, â€Å"He recognized my face. He knows something about me. He can't be just an anything. I'll see him in my room.† And then, as Tisalver's face didn't soften, he added, â€Å"My room, for which rent is being paid. And you'll be at work, out of the apartment.† Tisalver said in a low voice, â€Å"It's not me, Master Seldon. It's my wife, Casilia. She won't stand for it.† â€Å"I'll talk to her,† said Seldon grimly. â€Å"She'll have to.† 64. Casilia Tisalver opened her eyes wide. â€Å"A heatsinker? Not in my apartment.† â€Å"Why not? Besides, he'll be coming to my room,† said Seldon. â€Å"At fourteen hundred.† â€Å"I won't have it,† said Mistress Tisalver. â€Å"This is what comes of going down to the heatsinks. Jirad was a fool.† â€Å"Not at all, Mistress Tisalver. We went at my request and I was fascinated. I must see this young man, since that is necessary to my scholarly work.† â€Å"I'm sorry if it is, but I won't have it.† Dors Venabili raised her hand. â€Å"Hari, let me take care of this. Mistress Tisalver, if Dr. Seldon must see someone in his room this afternoon, the additional person naturally means additional rent. We understand that. For today, then, the rent on Dr. Seldon's room will be doubled.† Mistress Tisalver thought about it. â€Å"Well, that's decent of you, but it's not only the credits. There's the neighbors to think of. A sweaty, smelly heatsinker-â€Å" â€Å"I doubt that he'll be sweaty and smelly at fourteen hundred, Mistress Tisalver, but let me go on. Since Dr. Seldon must see him, then if he can't see him here, he'll have to see him elsewhere, but we can't run here and there. That would be too inconvenient. Therefore, what we will have to do is to get a room elsewhere. It won't be easy and we don't want to do it, but we will have to. So we will pay the rent through today and leave and of course we will have to explain to Master Hummin why we have had to change the arrangements that he so kindly made for us.† â€Å"Wait.† Mistress Tisalver's face became a study of calculation. â€Å"We wouldn't like to disoblige Master Hummin†¦ or you two. How long would this creature have to stay?† â€Å"He's coming at fourteen hundred. He must be at work at sixteen hundred. He will be here for less than two hours, perhaps considerably less. We will meet him outside, the two of us, and bring him to Dr. Seldon's room. Any neighbors who see us will think he is an Outworlder friend of ours.† Mistress Tisalver nodded her head. â€Å"Then let it be as you say. Double rent for Master Seldon's room for today and the heatsinker will visit just this one time.† â€Å"Just this one time,† said Dors. But later, when Seldon and Dors were sitting in her room, Dors said, â€Å"Why do you have to see him, Hari? Is interviewing a heatsinker important to psychohistory too?† Seldon thought he detected a small edge of sarcasm in her voice and he said tartly, â€Å"I don't have to base everything on this huge project of mine, in which I have very little faith anyway. I am also a human being with human curiosities. We were down in the heatsinks for hours and you saw what the working people there were like. They were obviously uneducated. They were low-level individuals-no play on words intended-and yet here was one who recognized me. He must have seen me on holovision on the occasion of the Decennial Convention and he remembered the word ‘psychohistory.' He strikes me as unusual-as out of place somehow-and I would like to talk to him.† â€Å"Because it pleases your vanity to have become known even to heatsinkers in Dahl?† â€Å"Well†¦ perhaps. But it also piques my curiosity.† â€Å"And how do you know he hasn't been briefed and intends to lead you into trouble as has happened before.† Seldon winced. â€Å"I won't let him run his fingers through my hair. In any case, we're more nearly prepared now, aren't we? And I'm sure you'll be with me. I mean, you let me go Upperside alone, you let me go with Raindrop Forty-Three to the microfarms alone, and you're not going to do that again, are you?† â€Å"You can be absolutely sure I won't,† said Dors. â€Å"Well then, I'll talk to the young man and you can watch out for traps. I have every faith in you.† 65. Amaryl arrived a few minutes before 1400, looking warily about. His hair was neat and his thick mustache was combed and turned up slightly at the edges. His T-shirt was startlingly white. He did smell, but it was a fruity odor that undoubtedly came from the slightly overenthusiastic use of scent. He had a bag with him. Seldon, who had been waiting outside for him, seized one elbow lightly, while Dors seized the other, and they moved rapidly into the elevator. Having reached the correct level, they passed through the apartment into Seldon's room. Amaryl said in a low hangdog voice, â€Å"Nobody home, huh?† â€Å"Everyone's busy,† said Seldon neutrally. He indicated the only chair in the room, a pad directly on the floor. â€Å"No,† said Amaryl. â€Å"I don't need that. One of you two use it.† He squatted on the floor with a graceful downward motion. Dors imitated the movement, sitting on the edge of Seldon's floor-based mattress, but Seldon dropped down rather clumsily, having to make use of his hands and unable, quite, to find a comfortable position for his legs. Seldon said, â€Å"Well, young man, why do you want to see me?† â€Å"Because you're a mathematician. You're the first mathematician I ever saw-close up-so I could touch him, you know.† â€Å"Mathematicians feel like anyone else.† â€Å"Not to me, Dr†¦ Dr†¦ Seldon?† â€Å"That's my name.† Amaryl looked pleased. â€Å"I finally remembered.-You see, I want to be a mathematician too.† â€Å"Very good. What's stopping you?† Amaryl suddenly frowned. â€Å"Are you serious?† â€Å"I presume something is stopping you. Yes, I'm serious.† â€Å"What's stopping me is I'm a Dahlite, a heatsinker on Dahl. I don't have the money to get an education and I can't get the credits to get an education. A real education, I mean. All they taught me was to read and cipher and use a computer and then I knew enough to be a heatsinker. But I wanted more. So I taught myself.† â€Å"In some ways, that's the best kind of teaching. How did you do that?† â€Å"I knew a librarian. She was willing to help me. She was a very nice woman and she showed me how to use computers for learning mathematics. And she set up a software system that would connect me with other libraries. I'd come on my days off and on mornings after my shift. Sometimes she'd lock me in her private room so I wouldn't be bothered by people coming in or she would let me in when the library was closed. She didn't know mathematics herself, but she helped me all she could. She was oldish, a widow lady. Maybe she thought of me as a kind of son or something. She didn't have children of her own.† (Maybe, thought Seldon briefly, there was some other emotion involved too, but he put the thought away. None of his business.) â€Å"I liked number theory,† said Amaryl. â€Å"I worked some things out from what I learned from the computer and from the book-films it used to teach me mathematics. I came up with some new things that weren't in the book-films.† Seldon raised his eyebrows. â€Å"That's interesting. Like what?† â€Å"I've brought some of them to you. I've never showed them to anyone. The people around me-† He shrugged. â€Å"They'd either laugh or be annoyed. Once I tried to tell a girl I knew, but she just said I was weird and wouldn't see me anymore. Is it all right for me to show them to you?† â€Å"Quite all right. Believe me.† Seldon held out his hand and after a brief hesitation, Amaryl handed him the bag he was carrying. For a long time, Seldon looked over Amaryl's papers. The work was naive in the extreme, but he allowed no smile to cross his face. He followed the demonstrations, not one of which was new, of course-or even nearly new-or of any importance. But that didn't matter. Seldon looked up. â€Å"Did you do all of this yourself?† Amaryl, looking more than half-frightened, nodded his head. Seldon extracted several sheets. â€Å"What made you think of this?† His finger ran down a line of mathematical reasoning. Amaryl looked it over, frowned, and thought about it. Then he explained his line of thinking. Seldon listened and said, â€Å"Did you ever read a book by Anat Bigell?† â€Å"On number theory?† â€Å"The title was Mathematical Deduction. It wasn't about number theory, particularly.† Amaryl shook his head. â€Å"I never heard of him. I'm sorry.† â€Å"He worked out this theorem of yours three hundred years ago.' Amaryl looked stricken. â€Å"I didn't know that.† â€Å"I'm sure you didn't. You did it more cleverly, though. It's not rigorous, but-â€Å" â€Å"What do you mean, ‘rigorous'?† â€Å"It doesn't matter.† Seldon put the papers back together in a sheaf, restored it to the bag, and said, â€Å"Make several copies of all this. Take one copy, have it dated by an official computer, and place it under computerized seal. My friend here, Mistress Venabili, can get you into Streeling University without tuition on some sort of scholarship. You'll have to start at the beginning and take courses in other subjects than mathematics, but-â€Å" By now Amaryl had caught his breath. â€Å"Into Streeling University? They won't take me.† â€Å"Why not? Dors, you can arrange it, can't you?† â€Å"I'm sure I can.† â€Å"No, you can't,† said Amaryl hotly. â€Å"They won't take me. I'm from Dahl.† â€Å"Well?† â€Å"They won't take people from Dahl.† Seldon looked at Dors. â€Å"What's he talking about?† Dors shook her head. â€Å"I really don't know.† Amaryl said, â€Å"You're an Outworlder, Mistress. How long have you been at Streeling?† â€Å"A little over two years, Mr. Amaryl.† â€Å"Have you ever seen Dahlites there-short, curly black hair, big mustaches?† â€Å"There are students with all kinds of appearances.† â€Å"But no Dahlites. Look again the next time you're there.† â€Å"Why not?† said Seldon. â€Å"They don't like us. We look different. They don't like our mustaches.† â€Å"You can shave your-† but Seldon's voice died under the other's furious glance. â€Å"Never. Why should I? My mustache is my manhood.† â€Å"You shave your beard. That's your manhood too.† â€Å"To my people it is the mustache.† Seldon looked at Dors again and murmured, â€Å"Bald heads, mustaches†¦ madness.† â€Å"What?† said Amaryl angrily. â€Å"Nothing. Tell me what else they don't like about Dahlites.† â€Å"They make up things not to like. They say we smell. They say we're dirty. They say we steal. They say we're violent. They say we're dumb.† â€Å"Why do they say all this?† â€Å"Because its easy to say it and it makes them feel good. Sure, if we work in the heatsinks, we get dirty and smelly. If we're poor and held down, some of us steal and get violent. But that isn't the way it is with all of us. How about those tall yellow-hairs in the Imperial Sector who think they own the Galaxy-no, they do own the Galaxy. Don't they ever get violent? Don't they steal sometimes? If they did my job, they'd smell the way I do. If they had to live the way I have to, they'd get dirty too.† â€Å"Who denies that there are people of all kinds in all places?† said Seldon. â€Å"No one argues the matter! They just take it for granted. Master Seldon, I've got to get away from Trantor. I have no chance on Trantor, no way of earning credits, no way of getting an education, no way of becoming a mathematician, no way of becoming any thing but what they say I am†¦ a worthless nothing.† This last was said in frustration-and desperation. Seldon tried to be reasonable. â€Å"The person I'm renting this room from is a Dahlite. He has a clean job. He's educated.† â€Å"Oh sure,† said Amaryl passionately. â€Å"There are some. They let a few do it so that they can say it can be done. And those few can live nicely as long as they stay in Dahl. Let them go outside and they'll see how they're treated. And while they're in here they make themselves feel good by treating the rest of us like dirt. That makes them yellow-hairs in their own eyes. What did this nice person you're renting this room from say when you told him you were bringing in a heatsinker? What did he say I would be like? They're gone now†¦ wouldn't be in the same place with me.† Seldon moistened his lips. â€Å"I won't forget you. I'll see to it that you'll get off Trantor and into my own University in Helicon-once I'm back there myself.† â€Å"Do you promise that? Your word of honor? Even though I'm a Dahlite?† â€Å"The fact that you're a Dahlite is unimportant to me. The fact that you are already a mathematician is! But I still can't quite grasp what you're telling me. I find it impossible to believe that there would be such unreasoning feeling against harmless people.† Amaryl said bitterly, â€Å"That's because you've never had any occasion to interest yourself in such things. It can all pass right under your nose and you wouldn't smell a thing because it doesn't affect you. † Dors said, â€Å"Mr. Amaryl, Dr. Seldon is a mathematician like you and his head can sometimes be in the clouds. You must understand that. I am a historian, however. I know that it isn't unusual to have one group of people look down upon another group. There are peculiar and almost ritualistic hatreds that have no rational justification and that can have their serious historical influence. It's too bad.† Amaryl said, â€Å"Saying something is ‘too bad' is easy. You say you disapprove, which makes you a nice person, and then you can go about your own business and not be interested anymore. It's a lot worse than ‘too bad.' It's against everything decent and natural. We're all of us the same, yellow-hairs and black-hairs, tall and short, Easterners, Westerners, Southerners, and Outworlders. We're all of us, you and I and even the Emperor, descended from the people of Earth, aren't we?† â€Å"Descended from what?† asked Seldon. He turned to look at Dors, his eyes wide. â€Å"From the people of Earth!† shouted Amaryl. â€Å"The one planet on which human beings originated.† â€Å"One planet? Just one planet?† â€Å"The only planet. Sure. Earth.† â€Å"When you say Earth, you mean Aurora, don't you?† â€Å"Aurora? What's that?-I mean Earth. Have you never heard of Earth?† â€Å"No,† said Seldon. â€Å"Actually not.† â€Å"It's a mythical world,† began Dors, â€Å"that-â€Å" â€Å"It's not mythical. It was a real planet.† Seldon sighed. â€Å"I've heard this all before. Well, let's go through it again. Is there a Dahlite book that tells of Earth?† â€Å"What?† â€Å"Some computer software, then?† â€Å"I don't know what you're talking about.† â€Å"Young man, where did you hear about Earth?† â€Å"My dad told me. Everyone knows about it.† â€Å"Is there anyone who knows about it especially? Did they teach you about it in school?† â€Å"They never said a word about it there.† â€Å"Then how do people know about it?† Amaryl shrugged his shoulders with an air of being uselessly badgered over nothing. â€Å"Everyone just does. If you want stories about it, there's Mother Rittah. I haven't heard that she's died yet.† â€Å"Your mother? Wouldn't you know-â€Å" â€Å"She's not my mother. That's just what they call her. Mother Rittah. She's an old woman. She lives in Billibotton. Or used to.† â€Å"Where's that?† â€Å"Down in that direction,† said Amaryl, gesturing vaguely. â€Å"How do I get there?† â€Å"Get there? You don't want to get there. You'd never come back.† â€Å"Why not?† â€Å"Believe me. You don't want to go there.† â€Å"But I'd like to see Mother Rittah.† Amaryl shook his head. â€Å"Can you use a knife?† â€Å"For what purpose? What kind of knife?† â€Å"A cutting knife. Like this.† Amaryl reached down to the belt that held his pants tight about his waist. A section of it came away and from one end there flashed out a knife blade, thin, gleaming, and deadly. Dors's hand immediately came down hard upon his right wrist. Amaryl laughed. â€Å"I wasn't planning to use it. I was just showing it to you.† He put the knife back in his belt. â€Å"You need one in self-defense and if you don't have one or if you have one but don't know how to use it, you'll never get out of Billibotton alive. Anyway†-he suddenly grew very grave and intent-â€Å"are you really serious, Master Seldon, about helping me get to Helicon?† â€Å"Entirely serious. That's a promise. Write down your name and where you can be reached by hypercomputer. You have a code, I suppose.† â€Å"My shift in the heatsinks has one. Will that do?† â€Å"Yes.† â€Å"Well then,† said Amaryl, looking up earnestly at Seldon, â€Å"this means I have my whole future riding on you, Master Seldon, so please don't go to Billibotton. I can't afford to lose you now.† He turned beseeching eyes on Dors and said softly, â€Å"Mistress Venabili, if he'll listen to you, don't let him go. Please.†