what is the theory of realitivity?
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it means that nothing is absolute. what ever you say is comparative. for example if we say my house is in north it means it is in north from the house which is more in south. however if we go more towards the north pole then my house will be in south. similarly if we are saying that it is hot that means we are comparing with the thing which is a bit cold and it will be cold if we compare it with more hot object. like India is a developed country in south Asia but is a developing country in the world. you may be rich but you are poorer than the world's richest person.
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An existetialist psychologist.\nLook here:
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Realism an inclination toward literal truth and pragmatism?  Is that your understanding of the word?\nIf so, I would hope it excludes wishful thinking.  \nThat seems to be the driving force in our Iraq policy.\nEdit - \nA little extra, maybe the root  of the question.\nRealism promotes short-term gain, often at the expense of long-term security.\nhttp://www.opinionjournal.com/editorial/feature.html?id=110009239\n\nAfter reading this I should change my answer.
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Theory of computation\nFrom Wikipedia, the free encyclopedia\n\nThe theory of computation is the branch of computer science that deals with whether and how efficiently problems can be solved on a computer. The field is divided into two major branches: computability theory and complexity theory, but both branches deal with formal models of computation.\n\nIn order to perform a rigorous study of computation, computer scientists work with a mathematical abstractions of computers called a model of computation. There are several formulations in use, but the most commonly examined is the Turing machine. A Turing machine can be thought of as a desktop PC with an infinite memory capacity, though it can only access this memory in small discrete chunks. Computer scientists study the Turing machine because it is simple to formulate, can be analyzed and used to prove results, and because it represents what many consider the most powerful possible "reasonable" model of computation. While the infinite memory capacity might be considered an unphysical attribute, for any problem actually solved by a Turing machine the memory used will always be finite, so any problem that can be solved on a Turing machine could be solved on a desktop PC which has enough memory installed.
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Extrapolation is a process of logical induction.  You take a trend from observations, and assume a trend holds in order to predict the outcome of a hypothetical observation.
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This is a Frequently Asked Question. Following is my previous answer:\n\nThis question may be asked so frequently (along with the infamous 0.999...) because no concrete axioms or definitions are ever given for the real number system until one studies higher algebra or real analysis; it is assumed that everyone knows what a real number is until then. The proliferation of these questions show that this assumption is no good.\nFor the sake of conciseness, I will not define what a real number is here, as only the algebraic structure of the real numbers is necessary to answer this question. The algebraic structure of the real numbers is what we call a field. A field is an algebraic structure that follows a finite set of axioms. These axioms define what statements are true and false in this system based on the laws of logic. You can find the field axioms here: http://mathworld.wolfram.com/Field.html .\nEach line is preceded by "For all real numbers a, b and c, the following is true...". Note that the proper form of the additive identity and multiplicative identity is that it prescribes the existence of some number 1 and some number 0 such that the equations hold. These same numbers are then used to prescribe the existence of additive and multiplicative inverses.\nDivision a/b is just shorthand for a*(b^(-1)). So in your question, you are looking for 1*0^(-1). It is easy to show that there is no such number as 0^(-1) in any field. Suppose 0^(-1) exists.\nThen 0*0^(-1) = 1. But multiplying both sides by 0^(-1) gives 0 = 0^(-1), which means 0*0 = 0 = 1. This is obviously false.\nSuppose 0 = 1. 0*a = a for all numbers a. But 0*a = (1 + (-1))*a = a + (-a) = 0. Thus 0 is not equivalent to 1 and our sole assumption that 0^(-1) exists must be false. Thus the expression 1*0^(-1) is undefined in a field.\nProof by contradiction is very powerful for many types of statements.\nAs to the limit argument, note that you are evaluating a limit of the function f(x) = 1/x. As we approach 0 from the negative x-axis, this limit decreases without bound, but as we approach 0 along the positive x-axis, the limit increases without bound. Thus, the limit of f(x) at 0 does not exist, so f(0) remains undefined with no continuous way to complete it. The limit is not indeterminate for this function; it does not exist.\nWhile 1/0 is not defined in any number system, |1/0| is defined as positive infinity in extended number systems (which are not fields by the above argument) for various purposes. See http://mathworld.wolfram.com/AffinelyExtendedRealNumbers.html .
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Truthfulness is telling the truth.\n\nOptimism, the opposite of pessimism, exemplifies a lifeview where one looks upon the world as a positive place. Optimists generally believe that people and events are inherently good. They have a so-called "positive" outlook on life, believing that things will work out in the end. A common conundrum illustrates optimism versus pessimism with the question, does one regard a given glass of water as half full or as half empty? Conventional wisdom expects optimists to reply with half full and pessimists to respond with half empty.\n\nPhilosophers often link the concept of optimism with the name of Gottfried Leibniz, who held that we live in the "best of all possible worlds," a theodicy which Voltaire famously mocked in his satirical novel Candide. The philosophical pessimism of, for instance, Arthur Schopenhauer, provides an opposite pole to philosophical optimism.\n\nThe anarchist philosopher William Godwin demonstrated perhaps even more optimism than Leibniz. He hoped that society would eventually reach the state where calm reason would replace all violence and force, that mind could eventually make matter subservient to it, and that intelligence could discover the secret of immortality. (Some express surprise to learn that a freedom-loving anarchist like William Godwin disapproved of suicide, but his disapproval came from his optimistic view of suicide as almost always a mistake.)\n\nOveroptimism, or strong optimism, is the overarching mental state wherein people believe that things will more likely go well for them than go badly. Compare this with the valence effect of prediction, a tendency for people to overestimate the likelihood of good things happening rather than bad things.\n\nPersonal optimism correlates strongly with self-esteem, with psychological well-being and with personal health. Martin Seligman, in researching this area, criticises academics for focusing too much on causes for pessimism and not enough on optimism. He points out that in the last three decades of the 20th century journals published 46,000 psychological papers on depression and only 400 on joy.\n\nIdeologically convinced optimists may defend failures in their hoped-for outcomes by discussing "misplaced optimism" rather than abandoning optimism altogether.\n\nA number of scholars have suggested that, although optimism and pessimism might seem like opposites, in psychological terms they do not function in this way. Having more of one does not mean you have less of the other. The factors that reduce one do not necessarily increase the other. On many occasions in life we need both in equal supply. Antonio Gramsci famously called for "pessimism of the intellect, optimism of the will": the one the spur to action, the other the resilience to believe that such action will result in meaningful change even in the face of adversity.\n\nHope can become a force for social change when it combines optimism and pessimism in healthy proportions. John Braithwaite, an academic at the Australian National University, suggests that in modern society we undervalue hope because we wrongly think of it as a choice between hopefulness and naivity as opposed to scepticism and realism.
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Vurtial doesnt not mean close ot real. It means in a fake state. reality is real. So a fake reality.
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Falsehood has existence. It does exist so long as it is unfolded and the Truth emerges out of it. It is Francis Bacon who said that Truth emerges more from errors than from confusion.
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Realist is a person who accepts and deals with situation as it really is and does not try to pretend that it is different.WHILE Idealist is the belief that a perfect life,situation,etc,can be achieved,even when this is not very likely.
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Real Analysis is the branch of math that deals with functions of real variables.  This includes things like caluclus of real valued functions, metric spaces, and a little bit about the topology of R^n.
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it is partially a question that suggests something that could happen but isn't actually happening at the time it is asked...\n\nWhat if the moon turned purple overnight?....it could potentially happen, isn't happening now and isn't likely to..so it is purely theoretical..\n\nTheoretical can also refer to something that you think is true but you cannot prove..hence the term 'theoretical physics'..although it can be proved mathematically...as it cannot be literally seen..it is termed as theoretical.
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the way i see it, anything you feel is just as real as anything else. i'm just not sure if everything is either real, or artificial. but, assuming that ANYTHING is "real", then even a person hallucinating something that noone else sees is having a "real" feeling. anyone who believes "i think, therefore i am" should agree with me.
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Back in the stone ages, we used "Real and Complex Analysis" by Walter Rudin 1966 McGraw Hill.\n\nI think Rundin may have written another book with the title "Functional Analysis", but I'm not sure.
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What do you mean by real?
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I agree with you on the true definition of reality.  What we call reality is just a perception.  I like how you think.
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how do you know that you are experiencing reality ?