Are you telling us that the 100 billions cells in our brain, plus the zillion interconnections, are a simple antenna?1. The only evidence for physicalism is that doing things to the brain affects the mind. This is expected by everyone though, dualists for instance don't say the two aren't connected, it isn't exclusive to physicalism. It also forgets that correlation isn't causation. And the conclusion doesn't even follow, for instance if I break my TV and can't watch the news anymore, my TV still doesn't create the news.
ciao
- viole