3 ideas
15380 | Barcan:nothing comes into existence; Converse:nothing goes out; Both:domain is unchanging [Vervloesem] |
6445 | You have knowledge if you can rule out all the relevant alternatives to what you believe [Dretske, by DeRose] |
8592 | Empty space is measurable in ways in which empty time necessarily is not [Bennett, by Shoemaker] |