Full Idea
A reason why I reject trope theory is that universals are required to give a satisfactory account of the laws of nature.
Gist of Idea
Universals are required to give a satisfactory account of the laws of nature
Source
David M. Armstrong (Properties [1992], §2)
Book Reference
'Properties', ed/tr. Mellor,D.H. /Oliver,A [OUP 1997], p.171
A Reaction
This is the key thought in Armstrong's defence of universals. Issues about universals may well be decided on such large playing fields. I think he is probably wrong, and I will gradually explain why. Watch this space as the story unfolds...