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Famous race scientist Richard Lynn was sure that Ireland's economic troubles were due to their low IQ and recommended eugenics to fix it. Good thing no one listened to him.

We shouldn't listen to his followers today either.
Ireland's average IQ results are significantly higher today than they were back then. Either the Irish genes magically got a lot better real quick, or the pseudoscientific racists were just as full of crap about the underlying causes then as they are now.
Notice being consistently wrong has not caused pseudoscientific racist arguments to retreat, but simply to redirect.

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