Combining Texts
Ideas for
'fragments/reports', 'The Structure of Science' and 'Material Beings'
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5 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
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The 'Law' of Excluded Middle needs all propositions to be definitely true or definitely false [Inwagen]
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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 / 4. Variables in Logic
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Variables are just like pronouns; syntactic explanations get muddled over dummy letters [Inwagen]
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5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / b. The Heap paradox ('Sorites')
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There are no heaps [Inwagen]
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