because FTL travel allows the traveler to go back in time
I'm actually curious, has FTL ever been observed in reality, even for just individual particles? My personal belief is that backwards time travel is impossible because the universe changes in-place, but I haven't actually done any research on the subject so I could be totally wrong.
Information has not been observed to travel faster than light. What I mean by “FTL travel allows the traveler to go back in time” is, if one were to abuse the equations to get a traveler that is moving faster than light, some times would also end up looking negative.
But these are nonsense quantities that come about from abusing the equations, I mention it not because I think it is a practical concern but to highlight that we can’t just say “assuming FTL” without also being charged with ancillary crimes against the laws of physics!
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I'm actually curious, has FTL ever been observed in reality, even for just individual particles? My personal belief is that backwards time travel is impossible because the universe changes in-place, but I haven't actually done any research on the subject so I could be totally wrong.
Information has not been observed to travel faster than light. What I mean by “FTL travel allows the traveler to go back in time” is, if one were to abuse the equations to get a traveler that is moving faster than light, some times would also end up looking negative.
But these are nonsense quantities that come about from abusing the equations, I mention it not because I think it is a practical concern but to highlight that we can’t just say “assuming FTL” without also being charged with ancillary crimes against the laws of physics!