4 ideas
21373 | We become objective when we detach ourselves from the world [Janaway] |
9123 | Someone standing in a doorway seems to be both in and not-in the room [Priest,G, by Sorensen] |
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] |