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Even if rules are fully deterministic it doesn't mean you can "extrapolate back". Update function would need to be reversible for that to always work (you shou
by ajuc 11y ago
Even if rules are fully deterministic it doesn't mean you can "extrapolate back".
Update function would need to be reversible for that to always work (you shouldn't be able to get the same state starting from different states). And I think it's not the case, at least localy (heat one corner of a metal plate slightly, wait till it equalizes, guess which one it was).
- mattlutze 11y agoImagine a computer powerful enough to look at a kind-of closed system like the Earth, and walk backwards through a simulation that allows you to see what "actually" happened, listen to conversations, all of that. Who would look out for the poor historians? It would make for a sweet game show actually, have a panel of historians make their best predictions on what really happened at an event, then "roll the footage!"