Full Idea
The main argument for the physical supervenience of qualia, then, is the apparent conceivability of zombies and qualia inversion in organisms physically indistinguishable from us.
Gist of Idea
Zombies and inversion suggest non-reducible supervenience
Source
Jaegwon Kim (Philosophy of Mind [1996], p.171)
Book Reference
Kim,Jaegwon: 'Philosophy of Mind' [Westview 1998], p.171
A Reaction
Since neither zombies nor qualia inversion for identical brains seem to me to be even remotely conceivable, I won't trouble myself with the very vague concept of 'supervenience'.