Science has not come anywhere near to defining what comprises the human self.
It's done a lot better than your incredulity, self-contradiction, and superstition.
Do you believe that your self comprises nothing more than physically predetermined material reactions?
Seriously, Alan? Why this pretence that you don't know the answer?
Why won't you engage in honest debate, you know, taking some notice of what has already been said to you, rather than just ignoring it all and asking the same questions and raising the same 'points' time and time and time again?