The Great Filter theory, specifically what is called the Upper Income Trap -- once a civilization reaches a certain standard of living, approximately that of present day upper-middle-class Westerners, it stops reproducing and then dies out.

Both are unlikely in practice imo, because they make an N-of-N assumption.

If even one culture can keep fertility rates high while others go low, it will end up dominating population-wise.

If even one culture can continue to focus on the physical world while others go virtual, it will end up dominating militarily.

Curious if you had a rebuttal to this

https://warpcast.com/vitalik.eth/0x9a6c9cc4

I dont see why this would be the case if it population shrink into oblivion. Either start reproduction, either clone, either solve aging

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