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Ideas for 'fragments/reports', '(Nonsolipsistic) Conceptual Role Semantics' and 'Abstraction Reconsidered'

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4 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

12595

We have a theory of logic (implication and inconsistency), but not of inference or reasoning [Harman]

5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens

8078	Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

6023	Every proposition is either true or false [Chrysippus, by Cicero]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / d. and

12597

I might accept P and Q as likely, but reject P-and-Q as unlikely [Harman]