Comment on Time travel is easy, it's just lame

Lemminary@lemmy.world ⁨6⁩ ⁨days⁩ ago

• kameecoding@lemmy.world ⁨6⁩ ⁨days⁩ ago

  Well, if we follow that logic, then where you end up is the emptiness of space, even if you go back exactly one year, people tend to forget that the Earth not only goes around the sun, but the whole system is moving, so Earth is not in the same place as it was a year ago, even if it is relative to the sun.

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  • BarbecueCowboy@lemmy.world ⁨5⁩ ⁨days⁩ ago

    I think that brings up the question of how do we go about establishing an absolute position? If everything is moving, what isn’t?

    Everything being relative is a hell of a thing.

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  • samus12345@lemm.ee ⁨5⁩ ⁨days⁩ ago

    Presumably all time travel devices, spells, etc. compensate for that. If someone figured out how to travel to the past, calculating where the planet was at the time should be easy by comparison.

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    • AEsheron@lemmy.world ⁨5⁩ ⁨days⁩ ago

      Even more specifically, if we are talking a temporal teleport, then this shouldn’t be a surprise. Most mainstream fiction uses teleports for time travel, pop out of one time and into another without experiencing the time between. As opposed to the device Farnsworth made in The Late Philip J. Fry, where they actually just change speed through time instead of skipping through it. In the latter case, you shouldn’t have to worry about this issue at all. But with a teleport, any teleportation device is simultaneously a temporal and spatial teleport, due to causality and the nature of spacetime. So any teleport would need spacetime coordinates, not just spatial or temporal coordinates.

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      • samus12345@lemm.ee ⁨5⁩ ⁨days⁩ ago

        In the year 252525

        The backwards time machine still won’t have arrived

        In all the world, there’s only one technology

        A rusty sword for practicing proctology

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