## The Evolution of Reason: Logic as a Branch of BiologyThe formal systems of logic have ordinarily been regarded as independent of biology, but recent developments in evolutionary theory suggest that biology and logic may be intimately interrelated. In this book, William S. Cooper outlines a theory of rationality in which logical law emerges as an intrinsic aspect of evolutionary biology. He examines the connections between logic and evolutionary biology and illustrates how logical rules are derived directly from evolutionary principles, and therefore, have no independent status of their own. This biological perspective on logic, though at present unorthodox, could change traditional ideas about the reasoning process. |

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axiomatic axioms behavior belief biological branch branchtips choice function classical logic coin constructed decision logic decision problem decision situation decision theory decision tree decision-theoretic deductive logic defined environment environmental event space evolution evolutionarily stable logic Evolutionary Derivation evolutionary theory evolve expected number Figure formal gamble ground-nesters growth rate humans individual inductive inductive reasoning inference involved language laws of logic life-history strategy theory life-history tree logical cognition mathematics metalanguage natural selection nesting nonclassical number of offspring objective optimal organism organismic population biology population members population models population process possible pragmatic predator predicts preference relation principles prior probabilities and utilities probability measure probability theory properties propositional logic propositions radical reductionism radical reductionist rate of increase rational reasoning Reducibility Thesis reductionism reductionist round node rules rung Savage-rational Savage's semantical sense shell strategy-mixing subjective fitnesses subjective probability subpopulation systems of logic tion tive trait tree diagram tree procedure valid values