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Single Idea 15087

[filed under theme 10. Modality / C. Sources of Modality / 4. Necessity from Concepts ]

Full Idea

Conceptual necessities can be taken to be propositions which are true in virtue of the nature of all concepts.

Gist of Idea

Conceptual necessities are made true by all concepts

Source

Bob Hale (Absolute Necessities [1996], p.9)

Book Ref

-: 'Philosophical Perspectives' [-], p.9


A Reaction

Fine endorse essences for these concepts. Could we then come up with a new concept which contradicted all the others, and destroyed the necessity? Yes, presumably. Presumably witchcraft and astrology are full of 'conceptual necessities'.


The 13 ideas with the same theme [necessity based on relations of concepts]:

3+4=7 is necessary because we cannot conceive of seven without including three and four [Descartes]
Formal experience conditions show what is possible, and general conditions what is necessary [Kant]
Necessary truths derive from basic assertion and negation [Fichte, by Pinkard]
Is conceptual necessity just conventional, or does it mirror something about nature? [Harré/Madden]
There is a conceptual necessity when properties become a standard part of a nominal essence [Harré/Madden]
The necessity of a proposition concerns reality, not our words or concepts [Stalnaker]
Conceptual possibilities are metaphysical possibilities we can conceive of [Stalnaker]
The source of de dicto necessity is not concepts, but the actual properties of the thing [Forbes,G]
De re necessity is a form of conceptual necessity, just as de dicto necessity is [Forbes,G]
Conceptual necessities rest on the nature of all concepts [Fine,K]
Conceptual necessities are made true by all concepts [Hale]
Concept-identities explain how we know necessities, not why they are necessary [Hale]
Humeans says mathematics and logic are necessary because that is how our concept of necessity works [Sider]