Combining Philosophers
Ideas for Herbert B. Enderton, Jan Westerhoff and Brian Ellis
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11 ideas
10. Modality / A. Necessity / 3. Types of Necessity
13576
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Necessities are distinguished by their grounds, not their different modalities [Ellis]
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10. Modality / A. Necessity / 5. Metaphysical Necessity
12668
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Metaphysical necessity holds between things in the world and things they make true [Ellis]
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10. Modality / B. Possibility / 1. Possibility
5479
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Scientific essentialists say science should define the limits of the possible [Ellis]
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10. Modality / B. Possibility / 8. Conditionals / f. Pragmatics of conditionals
9723
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Sentences with 'if' are only conditionals if they can read as A-implies-B [Enderton]
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10. Modality / C. Sources of Modality / 1. Sources of Necessity
12687
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Metaphysical necessities are those depending on the essential nature of things [Ellis]
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10. Modality / C. Sources of Modality / 5. Modality from Actuality
5483
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Essentialists deny possible worlds, and say possibilities are what is compatible with the actual world [Ellis]
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10. Modality / C. Sources of Modality / 6. Necessity from Essence
13570
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Individual essences necessitate that individual; natural kind essences necessitate kind membership [Ellis]
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5447
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Metaphysical necessities are true in virtue of the essences of things [Ellis]
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10. Modality / D. Knowledge of Modality / 3. A Posteriori Necessary
5476
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Essentialists say natural laws are in a new category: necessary a posteriori [Ellis]
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10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / a. Conceivable as possible
5478
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Imagination tests what is possible for all we know, not true possibility [Ellis]
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10. Modality / E. Possible worlds / 1. Possible Worlds / c. Possible worlds realism
5482
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Possible worlds realism is only needed to give truth conditions for modals and conditionals [Ellis]
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