Combining Philosophers
Ideas for Hermarchus, JC Beall / G Restall and James Rachels
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6 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
13235
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Logic studies consequence; logical truths are consequences of everything, or nothing [Beall/Restall]
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Syllogisms are only logic when they use variables, and not concrete terms [Beall/Restall]
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5. Theory of Logic / A. Overview of Logic / 2. History of Logic
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The view of logic as knowing a body of truths looks out-of-date [Beall/Restall]
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5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
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Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]
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13232
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Logic studies arguments, not formal languages; this involves interpretations [Beall/Restall]
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5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics
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The model theory of classical predicate logic is mathematics [Beall/Restall]
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