> My point is that there is no possible mechanism that would allow for "free agents" to exist. You suggest that God can somehow make decisions independent of the universe, but you just sort of expand that ability to humans living in the universe. How can that be? Describing this mechanism (I suggest doing so is impossible) is what I'm interested in.

I agree with you there - I can't think of any scientific way to explain free will. For example, with quantum mechanics, when an electron goes in a particular direction, it isn't because the electron thought about it and _chose_ to go that way, it just does. If you want to believe in free will, you just have to accept some kind of supernatural mechanism.