Full Idea
There must exist states of affairs as truthmakers, to get us beyond 'loose and separate' entities. ...They can be bundles of tropes, or trope-with-particular, or bundles of universals ('compresence'), or instantiations. They are an addition to ontology.
Gist of Idea
Truthmaking needs states of affairs, to unite particulars with tropes or universals.
Source
David M. Armstrong (Truth and Truthmakers [2004], 04.5)
Book Reference
Armstrong,D.M.: 'Truth and Truthmakers' [CUP 2004], p.49
A Reaction
Armstrong is the great champion of states of affairs. They seem rather vague to me, and disconcertingly timeless.