Quote:

But it's the most logic explanation for me.




Let's apply Occam's Razor here (the simplest explanation is usually the correct one):

Isn't it a simpler reason to state that he dreamed the whole time he was vegitative rather than g into a parallel dimension? After all, dreams warp our sense of time such that what seemed like hours in a dream could be minutes in real time.

This sounds more logical to me than applying quantum phenomena.

So my followup question to this would be: how would you tell the difference between a realistic dream and a quantum dimensional leap?