This is just philosophical. Those who believe in predestination, and those who believe in free will, can both provide scriptures which at least SEEM to support their idea. But why couldn't there be a middle ground? Isn't it possible that G-d retains the power to over-ride our free will, but prefers to allow us our freedom? Isn't it possible that some events in human history are prescripted, some could even be said to simply be inevitably, and yet free will could still exist the rest of the time? As usual, I don't see why it has to be "all or nothing."