[rockercoaster]

Would a very-small number of people leaving affect a well-distributed and population-wide metric like IQ in a measurable way at all? I'd expect not.

What are you trying to get at? Could you be more direct? I'm having trouble making sense of this post.

[hlynurd]

I suspect that being born into money is a much stronger predictor of becoming ultra-wealthy than IQ.

[sebastianconcpt]

From where the higher IQ groups would get their even higher IQ inspiration from and push up / raise their networks of influence? (improve social mobility).

How their daily lives will cross vs common experiences with substantial opportunities creators be permanently aborted?

How that wouldn't produce irreversible consequences in a population?

You could say, oh wait, just loosing one Elon has zero impact in a population and yet whole humanity might not become multiplanetary without that one guy in the country that had created the conditions for that raising a ton of talented guys up.