Full Idea
One might give Ockham's Razor a bit more content by advising belief in only those entities which are causally efficacious.
Gist of Idea
Ockham's Razor has more content if it says believe only in what is causal
Source
Alex Oliver (The Metaphysics of Properties [1996], §03)
Book Reference
-: 'Mind' [-], p.8
A Reaction
He cites Armstrong as taking this line, but I immediately think of Shoemaker's account of properties. It seems to me to be the only account which will separate properties from predicates, and bring them under common sense control.