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Ideas for 'fragments/reports', 'On the Moral and Legal State of Abortion' and 'Mere Possibilities'

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4 ideas

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 / 1. Logical Form

16464

We regiment to get semantic structure, for evaluating arguments, and understanding complexities [Stalnaker]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / e. or

16465

In 'S was F or some other than S was F', the disjuncts need S, but the whole disjunction doesn't [Stalnaker]