[IdSayThatllDoIt]

This seems like a straw man argument.

That the brain uses electrical/chemical signals is crank science about subatomic particles messing with your aura in a way comparable to "body thetans" in Scientology.

If that were not so, electrical/chemical engineers could upgrade our brains with their knowledge of electricity/chemistry.

Scientific progress is thinking about stuff. And my Occam's razor is leaning toward "if just arithmetic could yield consciousness we would have figured it out by now".