Jack asks:

Seriously though the problem I’m having is convincing a friend that the belief that God has exhaustive foreknowledge yet free will is still possible. I deal with Arminians not Calvinists.
So I’m looking for something that is a good argument against that. Is there a good blog or article I could refer an Arminian too? Something short enough that my friend might actually take the time to read it?

Several responses:

Will Duffy offers his debate on the subject: link

Christopher Fisher offers two quotes by atheists:

From Arguing Against Gods:

Another tricky issue is whether or not genuine omniscience is in any way compatible with free will – either ours or the alleged god’s. To start with our free will, it has been observed many times that if a god knows the future with infallible certainty, then what this god knows will necessarily happen – there is no possibility for anything else to occur. We are, then, incapable of altering the future. Although the concept of human “free will” is hotly contested, I’m not aware of any theory of free will which could be considered compatible with a being perfectly knowing the future. If a god knows who will win the next presidential election, then it isn’t possible for anyone else to win. That’s predestination – and some theologians have unflinchingly embraced it, for example John Calvin.

And

George H Smith from Atheism: the Case Against God:

The first problem with omniscience is that it cannot be reconciled with any theory of free will in man. If one believes in an omniscient being, one cannot consistently hold that man has volitional control over his actions. If God knows the future with infallible certainty, the future is predetermined, and man is impotent to change it.

Some theologians (such as Calvin) have enthusiastically embraced predestination, but most theologians, sensing the enormous problems entailed by this doctrine, have attempted to defend some theory of volition. Without volition, morality becomes meaningless: we cannot blame or praise a man for an action over which he has no control. Without volition, the Christian scheme of salvation is a farce; men are predestined for either heaven or hell, and they have no voice in the matter. Why does God create men only to save some arbitrarily, and damn others? Why does the Christian bother to proselytize, since men cannot help what they believe anyway? The problems that arise for theology if it affirms predestination are unsolvable, but they necessarily ensue when omniscience is attributed to God.