monster is talking about something different here, not determinism. He's talking about an all-knowing God, which solely by itself does not require a deterministic link of events. That's the difference he's trying to make. He says that in his view, individualities and alternatives do exist, yet God still knows which one will be picked. It is not the same as not having any individualism and alternatives whatsoever and somebody or something being able to predict the future because of it. The fact that a God would be able to see the future would not necessarily mean that everything is predictable by logic and therefore deterministic, because God is something that defies logic to begin with (I'm almost sounding like a theist here, trying to defend a theists point of view.
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