I could give a cadoodle what medieval philsophers thought. Newton thought that everything could be perfectly predicted too ... now we have many non-Newtonian sciences like Quantum Mechanics. Now, about that question as to why God must know exactly the future? Instead of referring me to authorities, actually reason with me.
Because God is, by definition, omniscient. It's like asking why gravity has an inward acceleration. I realize that isn't the best analogy because you can prove that gravity has an inward acceleration, but it gets the idea across. I consider myself Christian (despite my beliefs that you have called "heresy."), which states that God is omnipotent, omniscient, benevolent, eternal, omnipresent, etc.
Remember that this is a highly religious debate (it is, after all, in the religious forum). The presence of subjective material is invariably true here, I think. I apologize if what I've said has seemed at all objective.
If you don't believe God to be all-knowing, do you mind explaining why?
Look on this forum.
Don't assume that I've read every topic.
@Sidoh: It was in a different topic, but during school hours, so unless you have college off on Thursday (or haven't started yet) you couldn't see it anyhow. .
I have one class on Thursdays. The rest of the days I have four or five.
@nslay: From your posts, you seem to be religious. Out of curiocity, am I right?
curiosity. I've told you that a few times... wouldn't want you to get docked off points on an English paper...