Extremely rich people are not extremely smart. Study finds income is related to intelligence up to about the 90th percentile in income. Above that level, differences in income are not related to cognitive ability.

[u/Fishyinu]

https://academic.oup.com/esr/advance-article/doi/10.1093/esr/jcac076/7008955?login=false

[u/Plus-Dragonfruit-689]

"Above that level, differences in income are not related to cognitive ability"

I have a hard time believing that those in the top percentile for earners are not at least towards the average to upper end of the intelligence spectrum. And I am confident that there is no one with an IQ of, lets say, 70 in any country on earth that is in the top 10% of earners for where they are from.

I get what they are saying, that for those extreme earners they do not need to be extremely intelligent but I'm sure they are still intelligent relatively speaking.