[Enchante]

Well this is merely "modal logic" and not necessarily embraced by any physicists that I know of, but the late philosopher David Lewis (Princeton prof) had a theory that can be called extreme modal realism:

"Lewis's best known, and most controversial theory is that there exist an infinite number of concrete and causally isolated parallel universes, of which ours is just one, and which play the role of possible worlds in the analysis of necessity and possibility...."[Wikipedia]

[Enchante]

I keep wanting to know why “I” can’t live in that parallel possible world in which “I” can do and have and be anything I want, even better than a Superman...... Jessica Alba would be just the beginning of my hedonistic delights.......