Greg Boyd has a fascinating post on the real issue at the heart of open theism, namely the nature of the future, as opposed to the denial of God's perfect knowledge. Here's how he opens the post:
Sometimes little mistakes have big consequences. I think I may have uncovered one such mistake that took place two and a half millennia ago that continues to adversely affect people’s thinking about foreknowledge.
First a little background. As I’m sure most of my bloggers know, open theism (which I embrace) holds that, because agents are free, the future includes possibilities (what agents may and may not choose to do). Since God’s knowledge is perfect, open theists hold that God knows the future partly as a realm of possibilities. This view contrasts with classical theism that has usually held that God knows the future exclusively as a domain of settled facts. There are no “maybes” for God.
The debate is not about the scope and perfection of Gods’ knowledge, for both open theists and classical theists affirm God’s omniscience. God always knows everything. The debate, rather, is about the content of the reality God perfectly knows. It comes down to the question of whether or not possibilities are real.
This isn’t a difficult concept to grasp, which is why for years I’ve been puzzled as to why many defenders of the classical theism continue to spin the debate with open theists as a disagreement over the perfection of God’s knowledge. For example, they publish books with titles like How Much Does God Know? (Steven Roy) and What Does God Know and When Does He Know It? (Millard Erickson). They of course know open theists believe God always knows everything, so why do they continue to argue as if we don’t?
Part of the explanation, of course, may be simple propaganda. Yet I’ve become convinced that something deeper than this is going on. My sense is that, while spinning the debate as about God’s knowledge rather than the nature of reality certainly is advantageous for the purpose of propaganda, the critics who argue this way also seem to sincerely believe what they’re saying. How can this be?
The rest of the post is quite thought provoking. Check it out here.