Same question as to another poster. What if we are, by definition, not smart enough to ever understand those new physics. If we humans simply aren't that smart?
If you could devise an experiment that would definitively prove or disprove the existence of God, but could not tell you if there was an afterlife or which religion is correct, would you run it? Would you expect no one to want to? Would it have a profound effect on your life or the way you think if you did?