9 ideas
| 10245 | One geometry cannot be more true than another [Poincaré] |
| 15565 | Events have inbuilt essences, as necessary conditions for their occurrence [Lewis] |
| 15566 | Events are classes, and so there is a mereology of their parts [Lewis] |
| 15567 | Some events involve no change; they must, because causal histories involve unchanges [Lewis] |
| 15561 | The events that suit semantics may not be the events that suit causation [Lewis] |
| 15564 | An event is a property of a unique space-time region [Lewis] |
| 15563 | Properties are very abundant (unlike universals), and are used for semantics and higher-order variables [Lewis] |
| 12812 | Things have real essences, but we categorise them according to the ideas we receive [Locke] |
| 15562 | Causation is a general relation derived from instances of causal dependence [Lewis] |