The Relationship Between the Mind and the Brain

A lot of philosophers think the mind's relationship to the brain is this way. Any change in the mental requires some kind of change in the physical brain. C.S. Lewis kind of fundamentally misunderstands that aspect of it. If the mind if as most philosophers think theMind and brain do have a supervenient relationship, then P zombies are actually impossible. It makes no sense to think, well, is there a possible world where our brains are doing exactly what they do? There's no mind that arises from it.