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'works', 'Science without Numbers' and 'Moral Thinking: Its Levels,Method and Point'
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2 ideas
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
10260
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Logical consequence is defined by the impossibility of P and ¬q [Field,H, by Shapiro]
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5. Theory of Logic / D. Assumptions for Logic / 3. Contradiction
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Contradiction is not a sign of falsity, nor lack of contradiction a sign of truth [Pascal]
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