The Giant KoreanThe reason why we never meet time travelers is because our civilization ends before the technology can come to fruition.
lurch (he/him)nah, the reason is: when you travel back in time, our gakaxy, solar system and planet are in different absolute universal positions. so you end up alone in deep space and by the time the planet reaches your position the time you traveled back has passed, making it absolutely useless and life threatening.
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.
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.
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.
