Um… I think the vast majority of false pasts you got this way would be nothing like the real past. I think they may even end up with higher entropy, i.e., arrow of time runs forward from here after a brief reversal (in the vast majority of extrapolated pasts).
Okay, that would mean you can’t just run the physics backward, but that shouldn’t stop the Bayesian method (come up with a prior over histories of Earthlike worlds or some similar class, update on memories, records, etc.) or computationally feasible approximations thereof.
Um… I think the vast majority of false pasts you got this way would be nothing like the real past. I think they may even end up with higher entropy, i.e., arrow of time runs forward from here after a brief reversal (in the vast majority of extrapolated pasts).
Okay, that would mean you can’t just run the physics backward, but that shouldn’t stop the Bayesian method (come up with a prior over histories of Earthlike worlds or some similar class, update on memories, records, etc.) or computationally feasible approximations thereof.
I agree but find the wording in your comment confusing… especially the part after “i.e.” (ironically)