8 ideas
14626 | In S5 matters of possibility and necessity are non-contingent [Williamson] |
17447 | Parsons says counting is tagging as first, second, third..., and converting the last to a cardinal [Parsons,C, by Heck] |
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] |
14531 | Rather than define counterfactuals using necessity, maybe necessity is a special case of counterfactuals [Williamson, by Hale/Hoffmann,A] |
19590 | Empiricists are passive thinkers, given their philosophy by the external world and fate [Novalis] |
14628 | Imagination is important, in evaluating possibility and necessity, via counterfactuals [Williamson] |