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Ideas for
'fragments/reports', 'Elbow Room: varieties of free will' and 'Truthmakers'
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4 ideas
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 / a. Logical connectives
18489
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Connectives link sentences without linking their meanings [MacBride]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
18476
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'A is F' may not be positive ('is dead'), and 'A is not-F' may not be negative ('is not blind') [MacBride]
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