Combining Texts
Ideas for
'Internalism Exposed', 'New Essays on Human Understanding' and 'Logical Necessity'
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7 ideas
10. Modality / A. Necessity / 3. Types of Necessity
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A distinctive type of necessity is found in logical consequence [Rumfitt, by Hale/Hoffmann,A]
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10. Modality / A. Necessity / 6. Logical Necessity
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Logical necessity is when 'necessarily A' implies 'not-A is contradictory' [Rumfitt]
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A logically necessary statement need not be a priori, as it could be unknowable [Rumfitt]
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Narrow non-modal logical necessity may be metaphysical, but real logical necessity is not [Rumfitt]
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10. Modality / C. Sources of Modality / 5. Modality from Actuality
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A perfect idea of an object shows that the object is possible [Leibniz]
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10. Modality / D. Knowledge of Modality / 1. A Priori Necessary
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Proofs of necessity come from the understanding, where they have their source [Leibniz]
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10. Modality / E. Possible worlds / 1. Possible Worlds / e. Against possible worlds
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If a world is a fully determinate way things could have been, can anyone consider such a thing? [Rumfitt]
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