Combining Texts
Ideas for
'The Correspondence Theory of Truth', 'Conditionals' and 'Thinking about Consciousness'
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8 ideas
10. Modality / B. Possibility / 8. Conditionals / b. Types of conditional
14360
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Possible worlds for subjunctives (and dispositions), and no-truth for indicatives? [Jackson]
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10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals
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Modus ponens requires that A→B is F when A is T and B is F [Jackson]
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14354
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When A and B have the same truth value, A→B is true, because A→A is a logical truth [Jackson]
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14355
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(A&B)→A is a logical truth, even if antecedent false and consequent true, so it is T if A is F and B is T [Jackson]
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10. Modality / B. Possibility / 8. Conditionals / d. Non-truthfunction conditionals
14358
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In the possible worlds account of conditionals, modus ponens and modus tollens are validated [Jackson]
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14359
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Only assertions have truth-values, and conditionals are not proper assertions [Jackson]
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14357
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Possible worlds account, unlike A⊃B, says nothing about when A is false [Jackson]
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10. Modality / B. Possibility / 8. Conditionals / f. Pragmatics of conditionals
14356
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We can't insist that A is relevant to B, as conditionals can express lack of relevance [Jackson]
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