our choices today utterly decisively select one past, in a logical sense
That’s not necessarily true if multiple pasts are consistent with the state of the present, right? In other words, if there is information loss as you move forward in time.
Indeed. Those wouldn’t be bi-directional determinist theories, though. Interestingly, QM gets portrayed a lot like a bi-directional determinist theory in the wiki article on the black hole information paradox. (I don’t know enough QM to know how accurate that is.)
That’s not necessarily true if multiple pasts are consistent with the state of the present, right? In other words, if there is information loss as you move forward in time.
Indeed. Those wouldn’t be bi-directional determinist theories, though. Interestingly, QM gets portrayed a lot like a bi-directional determinist theory in the wiki article on the black hole information paradox. (I don’t know enough QM to know how accurate that is.)