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'', 'Material Beings' and 'The Nature of Things'
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6 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
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If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt]
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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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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
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The sense of a connective comes from primitively obvious rules of inference [Rumfitt]
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Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt]
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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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