"If science is right about free will, then there's no contest--what we call free will would defy physics, according to science, so it can't exist. And if it can't exist, then it doesn't exist. Science wins."
Thus begins an essay you'll find HERE. I give science's arguments for the non-existence of free will, then I turn those arguments around to prove free will can exist, then that it does. Finally I engage a hypothetical scientist in a conversation in which I bring him to admit he values free will over science. The winner, I conclude, is free will.
Contrived? Speak to Socrates about that.