Probability Quotes
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It is the concept of likelihood that a real understanding of probability resides, and we must learn how to measure it.
Anthony Stafford Beer
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Further, the same Arguments which explode the Notion of Luck, may, on the other side, be useful in some Cases to establish a due comparison between Chance and Design: We may imagine Chance and Design to be, as it were, in Competition with each other, for the production of some sorts of Events, and many calculate what Probability there is, that those Events should be rather be owing to the one than to the other.
Abraham de Moivre
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Consider the case of a person who holds a view with probability 1. Then coherence says that it is no use having a debate with them because nothing will change their mind.
Dennis Lindley
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Entropy theory, on the other hand, is not concerned with the probability of succession in a series of items but with the overall distribution of kinds of items in a given arrangement.
Rudolf Arnheim
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If WE claim only reasonable probability, it will be as much as men who love the truth can ever at any given moment hope to have within their grasp.
William James
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Should the States reject this excellent Constitution, the probability is, an opportunity will never again offer to cancel another in peacethe next will be drawn in blood.
George Washington
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Even very low-probability events can, and indeed do, occur.
Gavin Extence
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Fame, we may understand, is no sure test of merit, but only a probability of such: it is an accident, not a property, of a man; like light, it can give little or nothing, but at most may show what is given.
Thomas Carlyle
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It is dangerous to attach probability zero to anything other than a logical impossibility.
Dennis Lindley
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Anything is possible, but not always probable. Innovators increase the probability of the impossible.
Braden Kelley
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Almost all thinking people agree that you should not have probability 1 (or 0) for any event, other than one demonstrable by logic, like 2 x 2 = 4.
Dennis Lindley
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Whatever way uncertainty is approached, probability is the only sound way to think about it.
Dennis Lindley
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The stone that Dr. Johnson once kicked to demonstrate the reality of matter has become dissipated in a diffuse distribution of mathematical probabilities. The ladder that Descartes, Galileo, Newton, and Leibniz erected in order to scale the heavens rests upon a continually shifting, unstable foundation.
Morris Kline
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The source of Pyrrhonism comes from failing to distinguish between a demonstration, a proof and a probability. A demonstration supposes that the contradictory idea is impossible; a proof of fact is where all the reasons lead to belief, without there being any pretext for doubt; a probability is where the reasons for belief are stronger than those for doubting.
Andrew Michael Ramsay
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Investing is not a natural science but rather a social science. So, it's never purely empirical; what you are trying to do is everything you possibly can to enhance your probabilities of being right more often than being wrong.
William Browne
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One of the most basic and pervasive social processes is the sorting and labeling of things, activities, and people... Sorting and labeling processes involve a trade-off of costs and benefits. In general, the more finely the sorting is done, the greater the benefits - and the costs... Sorting and labeling, whether of people or of things, is a sorting and labeling of probabilities rather than of certainties.
Thomas Sowell
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It is prima facie highly implausible that life as we know it is the result of a sequence of physical accidents together with the mechanism of natural selection. We are supposed to abandon this naïve response, not in favor of a fully worked out physical/chemical explanation but in favor of an alternative that is really a schema for explanation, supported by some examples. What is lacking, to my knowledge, is a credible argument that the story has a nonnegligible probability of being true.
Thomas Nagel
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The probability of life originating from accident is comparable to the probability of the Unabridged Dictionary resulting from an explosion in a printing factory.
Edwin Conklin