5 ideas
| 10245 | One geometry cannot be more true than another [Poincaré] |
| 8386 | Events are picked out by descriptions, and facts by whole sentences [Crane] |
| 18431 | Internal relations combine some tropes into a nucleus, which bears the non-essential tropes [Simons, by Edwards] |
| 8387 | A cause has its effects in virtue of its properties [Crane] |
| 8384 | The regularity theory explains a causal event by other items than the two that are involved [Crane] |