Combining Texts
Ideas for
'The Evolution of Modern Metaphysics', 'On Assertion and Indicative Conditionals' and 'Modal Logic within Counterfactual Logic'
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6 ideas
10. Modality / A. Necessity / 1. Types of Modality
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14625
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Necessity is counterfactually implied by its negation; possibility does not counterfactually imply its negation [Williamson]
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10. Modality / B. Possibility / 8. Conditionals / a. Conditionals
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14623
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Strict conditionals imply counterfactual conditionals: □(A⊃B)⊃(A□→B) [Williamson]
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10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals
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14288
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'If A,B' affirms that A⊃B, and also that this wouldn't change if A were certain [Jackson, by Edgington]
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13769
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Conditionals are truth-functional, but should only be asserted when they are confident [Jackson, by Edgington]
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10. Modality / B. Possibility / 9. Counterfactuals
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14624
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Counterfactual conditionals transmit possibility: (A□→B)⊃(◊A⊃◊B) [Williamson]
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10. Modality / C. Sources of Modality / 1. Sources of Necessity
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14531
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Rather than define counterfactuals using necessity, maybe necessity is a special case of counterfactuals [Williamson, by Hale/Hoffmann,A]
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