this post was submitted on 10 Apr 2024
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.

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The reason why we never meet time travelers is because our civilization ends before the technology can come to fruition. (lemmy.world)
submitted 7 months ago by TheGiantKorean@lemmy.world to c/showerthoughts@lemmy.world
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Sort of similar to the Great Filter theory, but applied to time travel technology.

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[–] FreeLikeGNU@lemmy.world 29 points 7 months ago (2 children)

Pretty sure there is no absolute universal position, everything in the universe being in motion relative to everything else as the universe expands, but that does not disprove your point anyways.

[–] WhoLooksHere@lemmy.world 18 points 7 months ago (1 children)

The reason it doesn’t disprove it is because the assumption “time travel works” is really just saying, if we ignore some basic rules of physics, what happens to what’s left? It’s a nonesense premise to debate what is basically nothing more than science fiction.

Could the rules we know about the universe be wrong? Absolutely! But discovering those new rules is what will answer that question. Till then, we might as well try and say Harry Potter is just quantum mechanics.

[–] FreeLikeGNU@lemmy.world 3 points 7 months ago

Look up Dr. Ronald L Mallett. This astrophysicist has some interesting takes on practical time travel. There's a great interview with him by Fraser Cain of Universe Today.

[–] bjoern_tantau@swg-empire.de 7 points 7 months ago (1 children)

You can use the cosmic microwave background as a universal reference frame. Relative to that we move at about 370 km/s, depending on the time of the year.

[–] horseloaf@lemmy.world 1 points 7 months ago (1 children)

Now I'm hurting my head by thinking about traveling faster than 370 km/s in the opposite direction to Earth...

[–] bjoern_tantau@swg-empire.de 4 points 7 months ago

For reference: Voyager 1 is traveling at 17 km/s away from the sun. The Parker Solar Probe should reach 191 km/s but will be flying towards the sun.