I don't know... I am with Herbert here: "The universe is always one step beyond logic." We may (and in my opinion, definitely will) continue to refine theories

I don't know... I am with Herbert here: "The universe is always one step beyond logic." We may (and in my opinion, definitely will) continue to refine theories of physics in the future but I don't think we will ever achieve perfection. There will always be some minuscule break that will give rise to a new theory. [UPDATE]: Of course, I have no logical means of proving that except inductive reasoning from history (we haven't come up with a perfect theory yet but we have continued to improve what we have) just as there is no deductive means to prove that a fundamental theory (however complex) does exist.