this post was submitted on 11 Dec 2023
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Uh, no shit? That's how light works once you're able to travel at relativistic speeds - communication over interstellar distances using light is going to take ages.
Even within our own solar system interplanetary travel will have significant communication time delays.
Edit: also, we already know that matter and light can't exceed c, but I wouldn't be surprised if we discover that other forces (gravitation, or another that we haven't understood yet) can transmit information at speeds >c. I wouldn't be surprised if we turned to quantum entanglement for instantaneous communication over extreme distances either.
My first thought was 'no shit' as well. There's a horrible heartbreaking anime about that.. Voices of a Distant Star.
I sadly disagree. Even if we figure out a way to instantaneously transport ourselves across the universe, there will be some shitty clause in fine-print that says we can't go back, or it took 0 time for us but 1 billion years for everything else.
Check out this video by Anton Petrov:
https://odysee.com/@whatdamath:8/woah!-someone-just-sent-an-impossible:4
That's just time travel with extra steps!
It literally is time travel.
We are all currently time-traveling at a ratio of (edit: roughly) 1:1