11 ideas
| 14626 | In S5 matters of possibility and necessity are non-contingent [Williamson] |
| 19043 | Bivalence applies not just to sentences, but that general terms are true or false of each object [Quine] |
| 8507 | Some think of reality as made of things; I prefer facts or states of affairs [Armstrong] |
| 19042 | Terms learned by ostension tend to be vague, because that must be quick and unrefined [Quine] |
| 8506 | Particulars and properties are distinguishable, but too close to speak of a relation [Armstrong] |
| 8505 | Refusal to explain why different tokens are of the same type is to be an ostrich [Armstrong] |
| 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] |
| 14628 | Imagination is important, in evaluating possibility and necessity, via counterfactuals [Williamson] |