undefined | Better HN

0 pointssdenton43y ago0 comments

Or it'll be like the time machine in Primer, where you can't go back before the time machine was turned on.

0 comments

1 comments · 1 top-level

That kinda only works if we’re the only civilization in the universe, right? What if some other civilization discovered it a long time ago?

j / k navigate · click thread line to collapse