Full Idea
Possible worlds semantics is appealing because it gives a compositional analysis of the truth conditions of statements about necessity and possibility.
Clarification
'Compositionality' is assembly from components
Gist of Idea
Possible worlds semantics has a nice compositional account of modal statements
Source
Edwin D. Mares (A Priori [2011], 02.2)
Book Reference
Mares,Edwin: 'A Priori' [Acumen 2011], p.16
A Reaction
Not sure I get this. Is the meaning composed by the gradual addition of worlds? If not, how is meaning composed in the normal way, from component words and phrases?