Well... its good as a theory, but it can only be proven through a unification of physics, and the way Hawking has been talking recently, i don't think he thinks it is possible...
Renormalization, as you might know, has already been under heavy scrutiny. As i was told today, even Feynman said it was a ''dull theory,'' but we had to put up with it, because nothing else can answer for it.
How are you anyway?