3 ideas
18758 | Validity is provable, but invalidity isn't, because the model is infinite [Church, by McGee] |
12727 | It's impossible, but imagine a body carrying on normally, but with no mind [Leibniz] |
5994 | Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG] |