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 Reference
-: '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'.