Combining Texts
Ideas for
'fragments/reports', 'Causal Powers' and 'The Logic of What Might Have Been'
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19 ideas
10. Modality / A. Necessity / 2. Nature of Necessity
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15290
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What reduces the field of the possible is a step towards necessity [Harré/Madden]
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10. Modality / A. Necessity / 3. Types of Necessity
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15291
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There is 'absolute' necessity (implied by all propositions) and 'relative' necessity (from what is given) [Harré/Madden]
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14680
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Logical possibility contains metaphysical possibility, which contains nomological possibility [Salmon,N]
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10. Modality / A. Necessity / 5. Metaphysical Necessity
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14690
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In the S5 account, nested modalities may be unseen, but they are still there [Salmon,N]
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14677
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Metaphysical necessity is said to be unrestricted necessity, true in every world whatsoever [Salmon,N]
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14679
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Bizarre identities are logically but not metaphysically possible, so metaphysical modality is restricted [Salmon,N]
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14688
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Without impossible worlds, the unrestricted modality that is metaphysical has S5 logic [Salmon,N]
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14685
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Metaphysical necessity is NOT truth in all (unrestricted) worlds; necessity comes first, and is restricted [Salmon,N]
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10. Modality / A. Necessity / 6. Logical Necessity
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15230
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Logical necessity is grounded in the logical form of a statement [Harré/Madden]
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14681
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Logical necessity is free of constraints, and may accommodate all of S5 logic [Salmon,N]
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10. Modality / A. Necessity / 7. Natural Necessity
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15214
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Natural necessity is not logical necessity or empirical contingency in disguise [Harré/Madden]
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15221
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The relation between what a thing is and what it can do or undergo relate by natural necessity [Harré/Madden]
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15224
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A necessity corresponds to the nature of the actual [Harré/Madden]
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15232
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Natural necessity is when powerful particulars must produce certain results in a situation [Harré/Madden]
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15288
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People doubt science because if it isn't logically necessary it seems to be absolutely contingent [Harré/Madden]
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15289
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Property or event relations are naturally necessary if generated by essential mechanisms [Harré/Madden]
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14676
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Nomological necessity is expressed with intransitive relations in modal semantics [Salmon,N]
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10. Modality / A. Necessity / 8. Transcendental Necessity
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15231
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Transcendental necessity is conditions of a world required for a rational being to know its nature [Harré/Madden]
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15234
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There is a transcendental necessity for each logical necessity, but the transcendental extends further [Harré/Madden]
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