I have heartburn with the following though....
The bold part is annoying.We know that the laws of quantum physics and General Relativity cannot be both correct, since they are contradictory and incompatible. We need a quantum gravity that reconciles QM and GR. They cannot be both correct. THAT is mathematically impossible and incoherent.It's a very clever result to learn that, for the realistically large-mass objects we have in our Universe, the precision required to calculate a truly time-reversible solution is greater than the precision the physical Universe actually allows. If the laws of quantum physics and General Relativity are both correct, as we have every reason to believe that they are, then even purely gravitational systems with as few as three masses are fundamentally irreversible.
Work was previously discussed here viewtopic.php?f=74&t=8310&p=71783&hilit ... ody#p71783