In one of his many refutations of free will, he says "Quantum mechanics is weird, but not weird enough to allow magic (free will)"
Coming from the same guy who thinks quantum mechanics means envelopes don't actually have contents until he opens them, and frequently incorporates quantum woo into his Simulation religion.
Noto Bene: The quantum mechanics free will argument is that in a Newtonian universe, if you could know the position and velocity of every spect of matter in the universe, you could calculate how far it would go before it bumps into anything else, what it would bump into, how it would effect it, and how far that would go until it bumps into something else, thus predicting the course of the universe with 100% certainty forever, meaning everything in motion is the way it always was going to be and the only way it could be. But in quantum mechanics, you can never know the position and momentum of a particle at the same time, and it's even argued it has none until observed, therefore there would be no certainties as to how the universe will progress. This has absolutely nothing to do with Scott's "everything you do is biologically motivated/subconscious, therefore there's no freewill" argument because it isn't about evolution or the subconscious, but he doesn't understand that.