6 ideas
13342 | Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap] |
13251 | Each person is free to build their own logic, just by specifying a syntax [Carnap] |
8406 | Not all explanations are causal, but if a thing can be explained at all, it can be explained causally [Sanford] |
8407 | A totality of conditions necessary for an occurrence is usually held to be jointly sufficient for it [Sanford] |
16713 | Philosophers are the forefathers of heretics [Tertullian] |
6610 | I believe because it is absurd [Tertullian] |