well there was the original double slit experiment, then there was the quantum double slit experiment done in the late 80s.
The summary of the results of the experiment was this:
A single quantum particle when passing through the double slit simultaniously takes both routes... a seemingly impossibility... until a detector is actually placed at the other side of the slot. Which at that point the probability collapses into a distinct choice. Removing the detector, the particle asserts again that it takes both routes.
That's not exactly right.
The detector on the other side of the slits is always there. It exhibits a wave interference pattern when nobody is watching which slit the particle goes thru. When they put detectors on the slits themselves, the particle was observed to go thru one slit or the other, and the interference pattern on the screen goes away, changing to a classical diffraction pattern.
Also, whether or not the particle "goes thru both slits at the same time" is the subject of some debate and interpretation. A more accurate description would describe the
probabilities of the particle going thru both slits, but those probabilities are less than one in a coherent quantum state. So it isn't
completely true that the particle goes thru both slits. Rather, it's approximately 50% true. This is where we got fuzzy logic, incidentally, because it was more useful to describe the behavior of reality where things aren't 100% true nor 100% false.
In application to our theory, every possible choice is taken simultaniously by our indivual with free choice until an actual measurement is made by the omnipotent being.
As pointed out previously, with ordinary definitions of omniscience, there would be no "unobserved" quantum state.
Another way of thinking about it is similar to a completely solved game, like tic tac toe. We know the entire move tree, 9 deep and 255K legal moves. The omnipotent being knows every possible outcome of every possible decision. When he directly observes you, the probabilities collapse into the decisions you have, are, and will make. But, you still have free choice.
Is it your suggestion that there are legitimate parallel universes for every unactualized probability in our universe? If you do not believe that these parallel universes actually exist, then there would be no accumulation of probable realities for God to know.
For what it's worth, I do think that the many worlds interpretation of quantum mechanics is the most accurate description of reality, so I wouldn't think you're crazy if that is also what you believe. I think it presents some other interesting problems for classical Christian dogma, but that isn't really my problem.