[Tris]

If you Subscribe to the hidden variable theory then even the supposedly probabalistic decay of an unstable nucleus is in fact determined by outside factors. In which case the scientist looking at the box only gives a probability because he can not observe the hidden factors.

Matter can be spontaneously created. This is why Black holes seem to emit matter. Large scale particle-antiparticle assymmetry is a problem when talking about the big bang though.

*bad pun alert*

If anyone has the GUTs to explain this all properly, there's probably a Nobel prize in if for them somewhere.

*end bad pun alert*