more from Nathan Salmon

Single Idea 14690

[catalogued under 10. Modality / A. Necessity / 5. Metaphysical Necessity]

Full Idea

The S5 theorist's miscontrual of English (in the meaning of 'possibly possible') makes nested modality unseen, but it does not make nested modality vanish. Inaccessible worlds are still worlds.

Gist of Idea

In the S5 account, nested modalities may be unseen, but they are still there


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

Book Reference

Salmon,Nathan: 'Metaphysics, Mathematics and Meaning' [OUP 2005], p.143

Related Idea

Idea 9065 S5 collapses iterated modalities (◊□P→□P, and ◊◊P→◊P) [Keefe/Smith]