Lazy cunt.
Boethius and Aquinas copped out by addressing the issue and reaffirming the existence of free will without rationalizing it with God's prescience. Augustine explained that humans have free will, but free will itself is a process that may be sufficiently understood by an infinite intelligence. That is, God knows the future because he knows what you will choose in your life, but he doesn't do the choosing himself.
I found Augustine's answer satisfactory only in a context that ignores the principles of determinism. That is, it's a good answer for the idiot's guide to metaphysics, but it doesn't withstand a modernist perspective. In my theory, the question is superfluous since conscious will is an illusory feeling, a passive emotion. This bounces the issue back to the concept of ethereal will, which is unique to my theory. In my theory, God does not prognosticate ethereal will because both EW and God himself are eternal and abiding, so chronology goes out the window.