logoalt Hacker News

ehntotoday at 4:00 AM1 replyview on HN

We are jumping pretty far ahead for a planet that can barely put two humans up there, but it is a great deal of my scifi dreams in one technology tree so I'll happily watch them try.


Replies

erutoday at 7:06 AM

The grandfather comment is perhaps mixing up two things:

If launch costs are cheap enough, you can bring aluminum up from earth.

But once your in-space economy is developed enough, you might want to tap the moon or asteroids for resources.