What the scientist would do, if allowed, during a TV interview which asks, "But what's it all mean professor, about the future of mankind?"---is to say, "I have no idea. I'm going back to my lab do research your question further and, if I'm lucky I'll have partial answer for before I die. Wait right here." BWAAAAAAAAHAHAHAHA! There has been a documentary playing on one of the independent channels over the last couple of weeks with that very purpose with respect to physics. I think it was "What Do We Know?".