This runs right into the problem that Harvard ran into when they first switched away from exclusively tests - Goodhart's law applied by HBD Tests are a proxy for overall genetic quality as long as the context is humans who resulted from the same selective pressures
Now introduce another group that was under intense selective pressure for height alone - members of this group break the invisible correlation that H was relying on. Test scores are and always were a proxy. They were a good proxy in a mono-ethnic nation. Now they're a bad proxy.
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This is on two levels - test scores are a proxy in the first place for intelligence and intelligence is a proxy for overall genetic quality and leadership ability.
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