Showerthoughts

29578 readers

694 users here now

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. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.

Rules

All posts must be showerthoughts
The entire showerthought must be in the title
Posts must be original/unique
Be good to others - no bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia
Adhere to Lemmy's Code of Conduct

founded 1 year ago

MODERATORS

vatlark@lemmy.world

forkball@lemmy.world

quinten@lemmy.world

Thekingoflorda@lemmy.world

253

The reason why we never meet time travelers is because our civilization ends before the technology can come to fruition. (lemmy.world)

submitted 6 months ago by TheGiantKorean@lemmy.world to c/showerthoughts@lemmy.world

99 comments fedilink hide all child comments

Sort of similar to the Great Filter theory, but applied to time travel technology.

you are viewing a single comment's thread
view the rest of the comments

[–] echodot@feddit.uk 13 points 6 months ago (1 children)

If time travel is possible it'll probably be limited to the lifeline of the time machine itself. You cannot travel back in time to a point prior to the invention of the first time machine.

[–] jkrtn@lemmy.ml 1 points 6 months ago

GR predicts "closed time-like curves," but they require weird conditions (an infinitely dense and infinitely long rotating string) or negative energy, and you can only ever travel to the start of the loop at the earliest.