Setting: The universe stops expanding and the arrow of time reverses, but unevenly, like a wave on a shore both advancing and receding.
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Reverse time domains crystallize and spread. The few civilizations yet around have to adapt, some make a killing trading between domains.
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there is an arrow of computation, or rather, an actual present state, and time supervenes via perspective of computed observers
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that’s why there are many arrows of time, but all aligned with the general causal flux, like currents in a river
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yeah, this is me playing with them
but try using "this and this and this arrow of time reverse and the others stay" in fiction tweets
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