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Cake day: June 17th, 2023
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ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•What goes into the best lasagna?English0·3 days agoB
Don’t forget your arms-jumper-umbrella!
ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•The worst part of waking up is ________English5·16 days agoGoodbye
ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•The worst part of waking up is ________English1·17 days agoO
ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•The best part of waking up is _____English3·17 days agoC
ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•I had four cups of ______ todayEnglish1·18 days agoE
ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•I had four cups of ______ todayEnglish3·18 days agoGoodbye
ns1@feddit.ukto Ask Lemmy, Ouija Style@lemmy.world•At last, people stand up and __________English5·28 days agoK
This is interesting because the most “realistic” (i.e. still not realistic) depictions of time travel in fiction involve travelling through a singularity or wormhole. So you probably have to be in space to start with, but also both ends of the wormhole have mass so they can be orbiting a planet or star and stay within a stable distance of it. It solves this particular problem (just leaving the other usual problem of causality!) It also proves your point since it does allow travelling in space, in fact it allows travelling faster than light.
I think the converse is true as well, that if faster than light travel is possible then time travel must be possible, at least if you take relativity at face value. As others have pointed out there’s no universal reference frame, and for any journey that is faster than light in one reference frame, there is another frame in which the journey goes backwards in time.