10 ideas
8138 | Beware lest any man spoil you through philosophy [Paul] |
18261 | A simplification which is complete constitutes a definition [Kant] |
14626 | In S5 matters of possibility and necessity are non-contingent [Williamson] |
22275 | Logic gives us the necessary rules which show us how we ought to think [Kant] |
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] |
18260 | If we knew what we know, we would be astonished [Kant] |
14628 | Imagination is important, in evaluating possibility and necessity, via counterfactuals [Williamson] |