If you think embryo selection is cheap, you've obviously never had to pay for a round of IVF... And selection for IQ only has no obvious limits if you think of it like milk yield in cows or oil content in rapeseed
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Look at. https://www.gwern.net/Embryo-selection#cost-benefit … Selection for many of these quant traits have been going for decades with +20 sd gains. No obvious limit. http://nautil.us/issue/18/genius/super_intelligent-humans-are-coming … https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3872177/ …http://science.sciencemag.org/content/307/5710/683 …
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The difference is we've *already* been strongly selected for increased intelligence, over hundreds of thousands of years.
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Why does that matter? We see lots of additive variance for humans for intelligence despite that.
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Embryo selection is a routine medical practice. Most embryos from IVF are killed. About 50% of conceptions lead to natural abortions too.
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No such argument was made by me. Read up on https://en.wikipedia.org/wiki/Principle_of_charity …
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Look at that slight-of-hand. Just below this comment he admits they didn't actually "raise" IQ.pic.twitter.com/UvBM6h4My4
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