Plenty is doing.
"[Popper and Eccles, The Self and its Brain] are unable to disprove the thesis that behaviour and the structure of experience are wholly determined by the organisation of the brain. The problem is an empirical one and our present level of ignorance does not justify the postulation of a homunculus who looks at the brain and helps it out."
Disclaimer: this quote appears here only to spark discussion. It is not endorsed one way or the other. Make up your own mind. Or just refresh the page for another viewpoint. From a collection assembled by the late Chris Brand.