Orac, I looked through your first reply to Bill S. I must say that I didn't pick up on everything you said, but one thing I think I got out of it is that QM is about the evolution of states with time, but you don't think classical physics is. Classical physics does incorporate evolution with time. After all calculating the orbit of a planet around the Sun certainly depends on time. And in GR Einstein developed a system that implicitly includes time as a part of the system (SpaceTime).
Now GR doesn't work when you come down to the atomic level, even at the level of many atoms. But QM doesn't work at all well when you come up to the level of solar systems. Trying to calculate the orbit of a planet from a QM perspective would be pretty much impossible.
So I figure that trying to get to GR from QM is going to be enormously difficult, if not impossible. But the problem is just as bad trying to go the other way. We need something different that will wind up incorporating both GR and QM.
Bill Gill
