It hurts me that you used google, but this is a decent post.
If time is truly linear and not a weird warping of curves like science tries to tell us, then certain things can certainly be foretold by an entity (God) that has knowledge of all causal effects.
A quantum computer would have to learn how to differienciete between experience and non-experience (subjective) and existent and non-existent (objective).
Show me a quantum computer that and can do that and then take the whole of the universe into causal analysis and then we'll talk.
They might be trying to it, but the scale is so massive and weird at the quantum scale that it will always be flawed.
It would still need to take in account the massively growing scale of the universe.
Protip: The universe is growing in the space of failed chaotic 'universes' (existence and non-existence).
I am thinking this can be thought of infinite level of hells in which things that don't follow causal laws collapse and make room for our casual universe.