Full Idea
The thesis that 'truth supervenes on being' (with or without possible worlds) offers only a necessary condition for the truth of contingent propositions, whereas the standard truth-maker theory offers necessary and sufficient conditions.
Gist of Idea
'Truth supervenes on being' only gives necessary (not sufficient) conditions for contingent truths
Source
Adolph Rami (Introduction: Truth and Truth-Making [2009], 09)
Book Reference
'Truth and Truth-Making', ed/tr. Lowe,E.J./Rami,A. [Acumen 2009], p.29
A Reaction
The point, I suppose, is that the change in being might be irrelevant to the proposition in question, so any old change in being will not ensure a change in the truth of the proposition. Again we ask - but what is this truth about?
Related Idea
Idea 14408 Truthmaker needs truths to be 'about' something, and that is often unclear [Merricks]