it was hard to convince gemini to the accept the block universe model
i had never heard of it being questioned before
it soudns like a lot of physicists had to work very hard to convince people that they didn't want to work on phone booth time machines because they only knew about subatomic particles
so it _sounds_ like if you wanted to (now of course this will be wrong because the thoughts got paused-debugged) make a backwads compjuter that calculated outputs from inputs, you would want it to be a quantum computer, so that the entropy would be held in uncollapsed waves rather than specific phases and polarities of thermal emis--
but mostly it's just really hard to keep engaging.
i suspect it's not reasonable to do and it's more fun to stop thinking about it and make it seem like it's doable
there are three big options. option 1 (most likely): not reasonable to do and then you feel sad and people are less misled by reading what you write option 2 (second likelihood): it's only reasonable to do if you have the resources of oppressively running a slave nation, and then they'll steal the tech from you when you start figuring it out and worsen things option 3 (least likelihood): you decide it's doable, nobody else believes it, and then a time machine becomes our obsessive life project that we never complet--