MtheGM: Interesting? Well ~~ I suppose: if you have that sort of anti-wysiwyg mindset, where you can't bear the thought of what you can see being all you can get.

As others have said, the "patently obvious" isn't always "quite" so obvious, and "wysiwyg" is often absolutely not correct.Personally, I have a problem with quite a few aspects of some of the "Parallel Worlds" hypotheses, but a lot of the things that "Hawking, Everett, the lot of them" have come up with are not only mathermatically elegant but have made observational predictions that have later been verified.

I was studying Astrophysics at Leicester university in the early 70s when the radio emmissions from Cygnus X-1 were observed and evidence started to build that it was a black hole....something that was until then just a mathematical concept.

And looking at something like the human body...what you "see" (touch, feel, etc) definitely appears solid....yet in reality, atoms being most empty space, there's hardly anything "solid" there at all....you're just a bunch of molecules made up of atoms that themselves are overwhelmingly a bunch of nothingness. Not "what you see is what you get" at all!