There are theories that the brain is just an interface for the mind-- as in, it exists apart from the brain, but the brain facilitates its expression in physica

There are theories that the brain is just an interface for the mind-- as in, it exists apart from the brain, but the brain facilitates its expression in physicality. If the brain were damaged, the interface would thus be damaged, and you could no longer access the information provided by mind. There are theories that there is no such thing as mind. You didn't prove anything.