It may be that in the fractiles of the human Everett branches, we live in a failing Earth - but it's not failed until someone messes up the first AI. I find that a highly motivating thought. Your mileage may vary.

Perhaps I am missing something obvious (I am severely underversed in MWI), but we cannot see any of the other Earth's, right? Why are we supposed to assume that they are succeeding or failing? If I just need to read up on MWI let me know and ignore this comment.

Bullet-pointed because I like thinking that way:

• What, exactly, does failed mean?
• Why does it matter if Earth is failed? Can we do anything about it or is it once failed, always failed?
• Why do other Earths matter? Are we being compared to them? Can we study them or learn from them?

But visualizing the alternative Everett branches of Earth, spread out and clustered - for me, at least, that seems to help trigger my mind into a non-Simon-and-Garfunkel mode of thinking. If the successful Earths lack a North Korea, how did they get there? Surely not just by signing a piece of paper saying they'd never fight again.

Is the answer to "how did they get there?" possible to achieve?