Full Idea
The controversial claim of my theory is that the causal features of properties are essential to them - are features that they have in all possible worlds.
Gist of Idea
I claim that a property has its causal features in all possible worlds
Source
Sydney Shoemaker (Causal and Metaphysical Necessity [1998], III)
Book Reference
Shoemaker,Sydney: 'Identity, Cause and Mind' [OUP 2003], p.415
A Reaction
One problem is that a property can come in degrees, so what degree of the property is necessary to it? It is better to assign this claim to the fundamental properties (which are best called 'powers').