Originally posted by florian
Several posts ask whether dream-life can be considered an alternative reality. I thought about this when I recently read Einstein's attempt to define a 'reality principle'.

\"If without disturbing a system we can predict with certainty the value of a physical quantity, then there exists an element of physical reality corresponding with that quantity.\"

So if you knew you weighed 140 pounds and in your dream you stepped on some scales which registered an amount close to that then you might consider that your dream-world had at least the paradoxical degree of reality conceded to events in quantum physics.
Im not a big studier of quantum physics so correct me if im wrong:

Quantum physics tries to convey the fact that other dimensions exist due to the choices one can make. Then perhaps our dream world or worlds could be those created dimensions. The reason most people have different dreams is due to the different choices they have made. This also could explain the reason some people share dreams. As we travel through the different dimensions occasionally we cross paths with another traveler.

Just a thought from the dancing banana gallery...