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Tag Archives: logic
Oral people lacked the categories that become second nature even to illiterate individuals in literate cultures: for example, for geometrical shapes…. [The illiterate cultures of remote Uzbekistan and Kyrgyzstan in the 1930’s] could not, or would not, accept logical syllogisms. … Continue reading
The existential quantifier ∃ of logic (the propositional calculus) and the image operation along a continuous function ƒ from topology turn out to be essentially the same operation: from a categorical point of view they are both adjoint functors. Steve … Continue reading
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Tagged adjoint, adjoint functors, category theory, functor, logic, math, mathematics, maths, topology
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Tautologies
We’ll get there when we get there. The past is passed. Whatever happens, happens. What’s yours is yours; what’s mine is mine. Wherever you go, there you are.
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Tagged 認命, Gricean implicature, language, logic, resignation
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The ontological commitment of a sentence is whatever must be among the values of bound variables for the sentence to come out as true. Willard van Orman Quine I bring up this quotation not to agree or disagree with Quine, … Continue reading
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Tagged argument, argumentation, language, logic, mathematics, meaning, philosophy, rhetoric, topos theory, toposes, truth, truth values, utterance, Willard van Orman Quine
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Evolutionary Psychology Rap (start at 09:00) Too bad Gary S Becker was left out of the shout out. Rational discounting in response to environmental factors? It’s economics as well as evo psych! Some awesome quotes: 8:54 How do you know you’re not … Continue reading
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Tagged crack cocaine, crime, criminology, economics, evolutionary psychology, homicide, hyperdiscounting, intentionality, life expectancy, logic, Mobb Deep, murder, race, rap, rationality, utility theory
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The actual science of logic is conversant at present only with things either certain, impossible, or entirely doubtful, none of which (fortunately) we have to reason on. Therefore the true logic for this world is the calculus of Probabilities, which … Continue reading
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Tagged Bayes' theorem, Bayesian, evidence, feminism, inference, James Clerk Maxwell, logic, plausibility, probability, reasoning, science, subjective probability, truth, uncertainty, validity
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The theory of universal algebras was well-developed in the twentieth century. [It] provides a basis for model theory, and [provides] an abstract understanding of familiar principles of induction, recursion, and freeness. The theory of coalgebras is considerably [less] developed. Coalgebras … Continue reading
While the black and white populations of the United States have long differed in various social and economic variables — in income, years of schooling, life expectancy, unemployment rates, crime rates, and scores on a variety of tests — so … Continue reading
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Tagged 4-D, African Americans, age, blacks, Cambodian Americans, Caucasian Americans, discrimination, economics, ethnicity, facts, gerontology, health, heritage, Hmong Americans, income, Japanese Americans, logic, mean, median, probability, race, United States, whites
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Race can be discussed as a social reality with a biological component. The consequences of that social reality have been very serious, however, and continue to be so. So are the consequences of the fallacies surrounding race. Among these fallacies … Continue reading
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Tagged bigot, bigotry, biology, correlation, discrimination, ethnic, ethnic group, ethnicity, facts, Griffe, inheritance, logic, miscegination, mulatto, mustee, politics, quadroon, race, racism, sex, skin colour, slavery, social stratification, wealth
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Fallacies are not simply crazy ideas. They are usually both plausible and logical — but with something missing. Sometimes what is missing in a fallacy is simply a definition. Undefined words have a special power in politics, particularly when they … Continue reading
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Tagged economics, equality, fairness, fallacies, irrationality, justice, logic, morals, politics, Thomas Sowell
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Human Mathematics 