'Never' is quite a statement
given that negative mass is a plausible thing, and given that negative mass objects in motion behave as if they're time reversed, and given that observers moving at (or above) relativistic speeds would witness some causality-breaking effects when observing each other...
If time is an emergent quality of space, and space can be manipulated, I think it's plausible that we could arrange energy and mass in ways that allow for meaningful/useful time reversal.
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brb Monkhouse Stampede, Thu 7 Dec 2023, 17:46,
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