10 ideas
14626 | In S5 matters of possibility and necessity are non-contingent [Williamson] |
14625 | Necessity is counterfactually implied by its negation; possibility does not counterfactually imply its negation [Williamson] |
14623 | Strict conditionals imply counterfactual conditionals: □(A⊃B)⊃(A□→B) [Williamson] |
14624 | Counterfactual conditionals transmit possibility: (A□→B)⊃(◊A⊃◊B) [Williamson] |
9216 | Each area of enquiry, and its source, has its own distinctive type of necessity [Fine,K] |
14531 | Rather than define counterfactuals using necessity, maybe necessity is a special case of counterfactuals [Williamson, by Hale/Hoffmann,A] |
9214 | Unsupported testimony may still be believable [Fine,K] |
14628 | Imagination is important, in evaluating possibility and necessity, via counterfactuals [Williamson] |
9215 | Causation is easier to disrupt than logic, so metaphysics is part of nature, not vice versa [Fine,K] |
5492 | How can essences generate the right powers to vary with distance between objects? [Armstrong] |