Quote Originally Posted by anhaato View Post
I think they're speaking of the entire world, not just Amaurot. The planet of Etheirys had no knowledge of other planets so they were "closed off" in that sense. But that's a weird thing to shame them for.
Indeed - the sundered world too would be closed off, but for some dragons and their pursuer ending up stranded on it. Amon sought to relieve his own existential angst through interstellar travel but mankind as a whole is content with the star.