The problem is IQ has little to do with overall competence.
A pure genius is still succeptible to lack of motivation and poor financial circumstance, rendering them utterly incompetent.
IQ correlates strongly with positive life outcomes. Yes, some bright people are lazy, socially inept, malevolent and other flaws, but on the whole a higher IQ person will live better than a lower IQ one. Similarly, a higher IQ society tends to be better than a lower IQ one.
See, positive life outcomes is so vague that you just took literally 51% of outcomes, effectively, and used it as a statistic...
How about I say it this way - if you picture your brain as a computer, you can imagine that all IQ does is measure things like the speed of your processor and the sizes of your RAM and HDD/SDD space.
If all someone who's "smarter" does is learn everything about some Anime, they'll die in some pathetic mishap as soon as a zombie apocalypse hits whereas someone who's prepared for twenty years lives humbly for 1000% of the time the "genius" stumbled around for.
Do your figures account for people with (at least symptoms of) things like Aspergers or ASD?
Again, I'm arguing that IQ doesn't matter as much as people want it to. I'm worried about competence - you know, how likely someone is to wield agency.
I just think it makes more sense to worry about how capable (people are)...
Intelligence would be a prerequisite of competence. It's hard for stupid people to be capable.
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