Full Idea
More than one trope can occupy the same spatio-temporal location, and it even seems possible for a pair of exactly resembling tropes to occupy the same spatio-temporal location.
Gist of Idea
More than one trope (even identical ones!) can occupy the same location
Source
Chris Daly (Tropes [1995], §6)
Book Reference
'Properties', ed/tr. Mellor,D.H. /Oliver,A [OUP 1997], p.155
A Reaction
This may be the strongest objection to tropes. Being disc-shaped and red would occupy the same location. Aristotle's example of mixing white with white (Idea 557) would be the second case. Individuation of these 'particulars' is the problem.
Related Idea
Idea 557 A Form is a cause of things only in the way that white mixed with white is a cause [Aristotle on Plato]