Full Idea
Reductive explanation requires a logical supervenience relation.
Gist of Idea
Reduction requires logical supervenience
Source
David J.Chalmers (The Conscious Mind [1996], 1.2.3)
Book Reference
Chalmers,David J.: 'The Conscious Mind' [OUP 1997], p.48
A Reaction
Why can't you say that in another world there are zombies, but in this world the mind is explained by its natural supervenience on the brain (given the current natural laws)? Driving on the left in Britain is explained by current laws.