8 ideas
| 11211 | If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt] |
| 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] |
| 14802 | Physical and psychical laws of mind are either independent, or derived in one or other direction [Peirce] |
| 11214 | We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt] |
| 14800 | The world is full of variety, but laws seem to produce uniformity [Peirce] |
| 13097 | Force in substance makes state follow state, and ensures the very existence of substance [Leibniz] |
| 14801 | Darwinian evolution is chance, with the destruction of bad results [Peirce] |