Harold and George Destroy the World

https://tomclancy.info/harold-and-george.html

Harold and George Destroy the World! — Tom Clancy

The effects of Idiocracy are much worse than we appreciate. I believe it's hidden in part by technology (as a cognitive crutch) and part by top skilled immigration (people previously suppressed in their undeveloped countries). And education is much, much worse almost everywhere by leaning more to memorization and catering to the lowest common denominator. Student A is bad at math and good at language, student B is the opposite, both get the worst education for both subjects.

I think we haven't felt yet the true consequences of this. Worldwide.

Idiocracy really seems to appeal to eugenicists. Is “stupid people breed too much” really an issue we think is worth propagating?
There can be also a softer version of it, which is that cultural richness and focus on education are easily transmitted within families. A society that doesn't value culture and education is going to produce less educated families with even less educated children.

It’s also true that IQ is both real and highly heritable. The military uses what’s essentially an IQ test to screen out the bottom 15% or so of the population: https://www.psychologytoday.com/us/blog/after-service/201801.... The military has found that people with aptitude test scores below the cutoff can’t be trained to competently perform any job in the military.

IQ is also highly heritable: https://pmc.ncbi.nlm.nih.gov/articles/PMC5985927.

Are Military Members "The Lowest of Our Low?"

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Psychology Today
Ah, yes, the IQ test; the universal, unbiased gauge of intellect across all cultures.
It isn't that, but it is one of the strongest predictors of success in the US military.
Sure, but what has that got to do with “IQ is also highly heritable?” which, in this context, suggests intelligence is something innate and biological, rather than recognizing an IQ test as a gauge skewed by culture and socioeconomic status.
Attacking IQ test is like vaccine denialism. People don’t like the fact that requiring individuals to cooperate can enhance health outcomes for the group as a whole. Similarly, people don’t like the idea that some individuals are just born smarter than other individuals.
Attacking IQ is nothing whatsoever like vaccine denialism. The valid/meaningful uses of IQ are widely debated in several hard science fields. That's not true of vaccines.