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gwern comments on New article on in vitro iterated embryo selection - Less Wrong
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And of course Hsu has been talking about it for... well, a long time, anyway.
Never, actually. Hsu has written interesting things about conventional embryo selection.
Ah. You were referring narrowly to just the in vitro part, not the iterated selection part. My bad.
What would non-in vitro iterated selection be, just normal breeding of adults?
I'm not sure what you mean by 'normal breeding of adults', but Hsu's proposal would be basically an augmented IVF: you do IVF as usual, sequence each of the embryos to get an estimate of IQ/whatever, and implant the highest-scoring one; the embryo develops into an adult, and you repeat the process.
Each generation could get a boost of maybe 5 points (it depends on how many embryos you can produce and how accurate your estimate is and how much of IQ turns out to be genuinely genetic), so in a century that could add up to quite a bit.
Ah I see, so the selection step is still in vitro, but not the entire lifecycle of an iteration. The wording had been confusing me. Thanks for clearing that up!