5 ideas
| 12812 | Things have real essences, but we categorise them according to the ideas we receive [Locke] |
| 21507 | Scientific explanation aims at a unifying account of underlying structures and processes [Hempel] |
| 17371 | Some kinds are very explanatory, but others less so, and some not at all [Devitt] |
| 17373 | Species pluralism says there are several good accounts of what a species is [Devitt] |
| 17372 | The higher categories are not natural kinds, so the Linnaean hierarchy should be given up [Devitt] |