Combining Philosophers
Ideas for Stilpo, John Bacon and Robert Hanna
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5 ideas
10. Modality / A. Necessity / 2. Nature of Necessity
11083
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A sentence is necessary if it is true in a set of worlds, and nonfalse in the other worlds [Hanna]
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10. Modality / A. Necessity / 5. Metaphysical Necessity
11086
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Metaphysical necessity can be 'weak' (same as logical) and 'strong' (based on essences) [Hanna]
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10. Modality / A. Necessity / 6. Logical Necessity
11084
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Logical necessity is truth in all logically possible worlds, because of laws and concepts [Hanna]
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10. Modality / A. Necessity / 7. Natural Necessity
11085
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Nomological necessity is truth in all logically possible worlds with our laws [Hanna]
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10. Modality / E. Possible worlds / 2. Nature of Possible Worlds / a. Nature of possible worlds
10466
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Maybe possible worlds are just sets of possible tropes [Bacon,John]
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