Full Idea
It is not merely the modal facts that result from our conventions, but the individuals and kinds that are modally involved.
Gist of Idea
The individuals and kinds involved in modality are also a matter of convention
Source
Alan Sidelle (Necessity, Essence and Individuation [1989], Ch.3)
Book Reference
Sidelle,Alan: 'Necessity, Essence and Individuation' [Cornell 1989], p.77
A Reaction
I am beginning to find Sidelle's views very sympathetic - going over to the Dark Side, I'm afraid. But conventions won't work at all if they don't correspond closely to reality.