Full Idea
A supervenience thesis is a denial of independent variation.
Gist of Idea
A supervenience thesis is a denial of independent variation
Source
David Lewis (New work for a theory of universals [1983], 'Dup,Sup,Div')
Book Reference
'Properties', ed/tr. Mellor,D.H. /Oliver,A [OUP 1997], p.205
A Reaction
Not everyone agrees on this. This says if either A or B change, the change is reflected in the other one. But the other view is of one-way dependence. A only changes if B changes, but B can also make changes that don't affect A.