The problem is that physicists have not yet succeed in marrying QM and GR, which is needed to get a quantum theory of space-time. You can bet on strings or on loop gravity though, or on the Dewitt-Wheeler equation, which, actually make physical time vanishing completely from the big picture. It is an internal parameter only.
Yes, none of which I pretend to understand any more than any guy who reads all the popular expositions of such theories. But it seems highly dubious to me for Krauss to even present a theory that pretends to explain something as fundamental as something from nothing given the absence of a QM-GR unification. After all, as good as QM and GR are at predicting stuff in their domains, we know that neither is right! It's an overreach. It is different for the UD. Its existence is a theorem in any theory of everything, like this one: classical logic + 0 ≠ s(x) s(x) = s(y) -> x = y x+0 = x x+s(y) = s(x+y) x*0=0 x*s(y)=(x*y)+x or in this one: Kxy = x Sxyz = xz(yz) Yeah OK fine, so maybe I'm one turtle too high! Let's just say arithemetic then. Why does it exist? Because. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To view this discussion on the web visit https://groups.google.com/d/msg/everything-list/-/59ceGIHlAowJ. To post to this group, send email to everything-list@googlegroups.com. To unsubscribe from this group, send email to everything-list+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.
