Combining Philosophers
Ideas for William James, Peter van Inwagen and Hilary Putnam
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8 ideas
10. Modality / A. Necessity / 11. Denial of Necessity
4718
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If necessity is always relative to a description in a language, then there is only 'de dicto' necessity [Putnam, by O'Grady]
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10. Modality / B. Possibility / 1. Possibility
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Mathematics eliminates possibility, as being simultaneous actuality in sets [Putnam]
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10. Modality / C. Sources of Modality / 5. Modality from Actuality
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Actuality proves possibility, but that doesn't explain how it is possible [Inwagen]
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10. Modality / D. Knowledge of Modality / 1. A Priori Necessary
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A statement can be metaphysically necessary and epistemologically contingent [Putnam]
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10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / a. Conceivable as possible
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Conceivability is no proof of possibility [Putnam]
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10. Modality / E. Possible worlds / 3. Transworld Objects / c. Counterparts
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Counterparts reduce counterfactual identity to problems about similarity relations [Inwagen]
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10. Modality / E. Possible worlds / 3. Transworld Objects / e. Possible Objects
17590
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A merely possible object clearly isn't there, so that is a defective notion [Inwagen]
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17591
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Merely possible objects must be consistent properties, or haecceities [Inwagen]
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