3 ideas
8942 | Lukasiewicz's L3 logic has three truth-values, T, F and I (for 'indeterminate') [Lukasiewicz, by Fisher] |
18946 | Unreflectively, we all assume there are nonexistents, and we can refer to them [Reimer] |
3016 | Even the gods cannot strive against necessity [Pittacus, by Diog. Laertius] |