Full Idea
The idea of 'global supervenience' is standardly expressed as 'there are no two physically possible worlds which are exactly alike in all physical respects but different in some other respect'.
Gist of Idea
'Global' supervenience is facts tracking varying physical facts in every possible world
Source
Terence Horgan (From Supervenience to Superdupervenience [1993], §5)
Book Reference
-: 'Mind' [-], p.16
A Reaction
[Jaegwon Kim is the source of this concept] The 'local' view will be that they do indeed track, but they could, in principle, come apart. A zombie might be a case of them possibly coming apart. Zombies are silly.
Related Idea
Idea 16054 Physicalism needs more than global supervenience on the physical [Horgan,T]