Just because smart people tend to have fewer children (because, for instance, they delay it due to schooling and career demands) doesn't mean genes for intelligence are necessarily being selected against.

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gfrecvh 19 hours ago | parent [-]

I dont understand what this phrase means.

In the context of evolution, if something causes fewer copies of a gene, that's what selected against means.

	▲	tptacek 19 hours ago \| parent [-]
		There's several reasons why this might not be the case, including that our premise is simple heritability and not genetic determinism, which is a different concept. I get where you're coming from now though.