> I wish I could answer your questions conclusively, but as I stated before, I really only know enough QM to get myself in trouble.
>
> That being said, it is my understanding that the actual position of subatomic particles really *is* indeterminate. Here's what I mean. It is possible for a sub-atomic particle to cross a barrier without ever actually traversing the space occupied by that barrier. It simply stops existing on one side of the barrier and begins existing on the other side simultaneously. It is an effect called quantum tunneling, and is demonstrably "real".
>
> In this way, it seems to be impossible, even in theory, to pin down a sub-atomic particle perfectly. Because, even if you think you've got it, suddenly, *poof* it's gone and it's now over there.
>
> Of course, the unasked question is, is *this* effect in itself predictable, thus making it so when the particle goes *poof* and re-appears somewhere else, we at least have the ability, in theory, to know where it is still? That I can't answer at all, unfortunately. I want to say "no", but that's just a feeling right now.

To contribute, I'd suggest reading the stuff I've linked to below and the references it provides. It's a pretty decent simplified explanation of exactly what weirdness goes on in the quantum universe.