more from Nathan Salmon

Single Idea 14681

[catalogued under 10. Modality / A. Necessity / 6. Logical Necessity]

Full Idea

With its freedom from the constraint of metaphysical possibility, logical necessity may be construed as accommodating all the axioms and rules of S5.

Gist of Idea

Logical necessity is free of constraints, and may accommodate all of S5 logic


Nathan Salmon (The Logic of What Might Have Been [1989], III)

Book Reference

Salmon,Nathan: 'Metaphysics, Mathematics and Meaning' [OUP 2005], p.137

A Reaction

He goes on to raise problems for this simple thought. The big question: what are the limits of what is actually possible? Compare: what are the limits of what is imaginable? what are the limits of what is meaningfully sayable?

Related Idea

Idea 14679 Bizarre identities are logically but not metaphysically possible, so metaphysical modality is restricted [Salmon,N]