Comment by 9rx

> When people are pessimistic about the future, they have fewer children.

But also, statistically, the richer you are, the fewer children you have. Why do you think those who are seemingly in the best position to be optimistic about the future are those most pessimistic about it? It is quite counterintuitive on the surface. Is it because the rich feel they have nowhere else to go, whereas those who are poor can still envision becoming rich themselves someday, giving them hope about a brighter future?

Regardless of the exact mechanics, the human state is self-correcting. Being rich is unsustainable without a lot of people around you. When births decline too much, those who are rich will become poor, and thus will start producing more children again. Humans will not echo horses based on this.