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| 16520 | We see properties necessary for a kind (in the definition), but not for an individual [Ayer] |
| Full Idea: We can significantly ask what properties it is necessary for something to possess in order to be a thing of such and such a kind, since that asks what properties enter into the definition of the kind. But there is no such definition of the individual. | |
| From: A.J. Ayer (The Central Questions of Philosophy [1973], 9.A.5) | |
| A reaction: [Quoted, not surprisingly, by Wiggins] Illuminating. If essence is just about necessary properties, I begin to see why the sortal might be favoured. I take it to concern explanatory mechanisms, and hence the individual. |