this post was submitted on 06 Sep 2023
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It would depend on the flavour of FTL, if it means physically moving through space at supraluminal speeds (which would of course be impossible according to our current understanding), time would be flowing backwards.
Even traveling at the speed of light would be sufficient as it would mean getting to the destination the instant you achieved that speed.
But we do not even have to go as fast. Even doing constant 1G acceleration half the way with subsequent 1G deceleration for the other would enable us to reach the edge of the obervable universe withing the span of a human lifetime iirc.