8 ideas
15990 | Every individual thing which exists has an essence, which is its internal constitution [Locke] |
12432 | Explanation of necessity must rest on something necessary or something contingent [Hale] |
12434 | Why is this necessary, and what is necessity in general; why is this necessary truth true, and why necessary? [Hale] |
12435 | The explanation of a necessity can be by a truth (which may only happen to be a necessary truth) [Hale] |
12433 | If necessity rests on linguistic conventions, those are contingent, so there is no necessity [Hale] |
12436 | Concept-identities explain how we know necessities, not why they are necessary [Hale] |
15994 | If it is knowledge, it is certain; if it isn't certain, it isn't knowledge [Locke] |
3193 | Turing showed that logical rules can be specified computationally and mechanically [Turing, by Rey] |