This could well be the case, though I don't know how one could falsify this without a superhuman intelligence, so is rather unscientific. I think the less cont

This could well be the case, though I don't know how one could falsify this without a superhuman intelligence, so is rather unscientific. I think the less controversial stance is that we're running out of road on what we can test with Earth-bound particle accelerators, and there are still open problems. That's a problem with what we can verify rather than what we can conceive, which could be an impasse to a grand unifying theory.