Hey, I think we’ve had a good understanding of renormalization group for at least a couple of decades! It might have been considered a hack before that, but I t

Hey, I think we’ve had a good understanding of renormalization group for at least a couple of decades! It might have been considered a hack before that, but I think by now we appreciate exactly what role it plays, and how to exploit it to the best of our abilities (Eg: effective field theories). See my other top-level comment for an interpretation. Btw, what was your thesis on? :-) PS: My thesis also touched on some of these ideas, but from the hep-th side.