25 ideas
9358 | There are several logics, none of which will ever derive falsehoods from truth [Lewis,CI] |
18755 | Validity is explained as truth in all models, because that relies on the logical terms [McGee] |
9357 | Excluded middle is just our preference for a simplified dichotomy in experience [Lewis,CI] |
18751 | Natural language includes connectives like 'because' which are not truth-functional [McGee] |
9364 | Names represent a uniformity in experience, or they name nothing [Lewis,CI] |
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] |
3523 | Shadows are supervenient on their objects, but not reducible [Maslin] |
3517 | 'Ontology' means 'study of things which exist' [Maslin] |
9362 | Necessary truths are those we will maintain no matter what [Lewis,CI] |
9365 | We can maintain a priori principles come what may, but we can also change them [Lewis,CI] |
3538 | Analogy to other minds is uncheckable, over-confident and chauvinistic [Maslin] |
3540 | If we are brains then we never meet each other [Maslin] |
3518 | I'm not the final authority on my understanding of maths [Maslin] |
3530 | Denial of purely mental causation will lead to epiphenomenalism [Maslin] |
3520 | Token-identity removes the explanatory role of the physical [Maslin] |
9361 | We have to separate the mathematical from physical phenomena by abstraction [Lewis,CI] |
18762 | A maxim claims that if we are allowed to assert a sentence, that means it must be true [McGee] |
3528 | Causality may require that a law is being followed [Maslin] |
3525 | Strict laws make causation logically necessary [Maslin] |
3527 | Strict laws allow no exceptions and are part of a closed system [Maslin] |
9363 | Science seeks classification which will discover laws, essences, and predictions [Lewis,CI] |