10 ideas
11211 | If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt] |
18812 | Split out the logical vocabulary, make an assignment to the rest. It's logical if premises and conclusion match [Tarski, by Rumfitt] |
13344 | X follows from sentences K iff every model of K also models X [Tarski] |
11210 | Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt] |
11212 | The sense of a connective comes from primitively obvious rules of inference [Rumfitt] |
13343 | A 'model' is a sequence of objects which satisfies a complete set of sentential functions [Tarski] |
16740 | A power is not a cause, but an aptitude for a cause [Zabarella] |
13345 | Sentences are 'analytical' if every sequence of objects models them [Tarski] |
11214 | We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt] |
16571 | Prime matter is exceptionally obscure [Zabarella] |