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'fragments/reports', 'Philosophical Theology' and 'The Elm and the Expert'
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3 ideas
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
2442
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Inferences are surely part of the causal structure of the world [Fodor]
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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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