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Full Idea
When a natural necessity is used as the basis for the inclusion or exclusion of the appropriate predicate in the meaning of a concept of a kind of particular, then it is conceptually necessary that that kind of particular has that property or power.
Gist of Idea
If natural necessity is used to include or exclude some predicate, the predicate is conceptually necessary
Source
Harré,R./Madden,E.H. (Causal Powers [1975], 1.V.B)
Book Ref
Harré,R/Madden,E.H.: 'Causal Powers: A Theory of Natural Necessity' [Blackwell 1975], p.20
A Reaction
This is one of the bolder views of Harré and Madden, since many philosophers would say that conceptual necessity rests entirely on convention rather than on nature. We could cut them out by just saying that most of our conventions rest on nature.
Related Idea
Idea 15235 There is a conceptual necessity when properties become a standard part of a nominal essence [Harré/Madden]
| 18726 | For each necessity in the world there is an arbitrary rule of language [Wittgenstein] |
| 15233 | If natural necessity is used to include or exclude some predicate, the predicate is conceptually necessary [Harré/Madden] |
| 15242 | Having a child is contingent for a 'man', necessary for a 'father'; the latter reflects a necessity of nature [Harré/Madden] |
| 13973 | A key achievement of Kripke is showing that important modalities are not linguistic in source [Soames] |
| 12433 | If necessity rests on linguistic conventions, those are contingent, so there is no necessity [Hale] |
| 15027 | If truths are necessary 'by convention', that seems to make them contingent [Sider] |
| 15028 | Conventionalism doesn't seem to apply to examples of the necessary a posteriori [Sider] |
| 15032 | Necessary a posteriori is conventional for necessity and nonmodal for a posteriority [Sidelle, by Sider] |
| 15179 | To know empirical necessities, we need empirical facts, plus conventions about which are necessary [Sidelle] |
| 6582 | Conventions can only work if they are based on something non-conventional [Fogelin] |
| 14478 | Modal Conventionalism says modality is analytic, not intrinsic to the world, and linguistic [Thomasson] |