13 ideas
| 18755 | Validity is explained as truth in all models, because that relies on the logical terms [McGee] |
| 18751 | Natural language includes connectives like 'because' which are not truth-functional [McGee] |
| 18761 | Second-order variables need to range over more than collections of first-order objects [McGee] |
| 18753 | An ontologically secure semantics for predicate calculus relies on sets [McGee] |
| 18754 | Logically valid sentences are analytic truths which are just true because of their logical words [McGee] |
| 18757 | Soundness theorems are uninformative, because they rely on soundness in their proofs [McGee] |
| 18760 | The culmination of Euclidean geometry was axioms that made all models isomorphic [McGee] |
| 21354 | It may be that internal relations like proportion exist, because we directly perceive it [MacBride] |
| 21353 | Internal relations are fixed by existences, or characters, or supervenience on characters [MacBride] |
| 21352 | 'Multigrade' relations are those lacking a fixed number of relata [MacBride] |
| 4691 | If all mental life were conscious, we would be unable to see things, or to process speech [McGinn] |
| 4690 | If meaning is speaker's intentions, it can be reduced to propositional attitudes, and philosophy of mind [McGinn] |
| 18762 | A maxim claims that if we are allowed to assert a sentence, that means it must be true [McGee] |