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'fragments/reports', '(Nonsolipsistic) Conceptual Role Semantics' and 'On 'Generation and Corruption''
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4 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
12595
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We have a theory of logic (implication and inconsistency), but not of inference or reasoning [Harman]
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5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
8078
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Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
6023
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Every proposition is either true or false [Chrysippus, by Cicero]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and
12597
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I might accept P and Q as likely, but reject P-and-Q as unlikely [Harman]
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