Thank you. I agree that the author acts recklessly and presents unwarranted conclusions. That said, in case of widespread genetic engineering, I would expect p

Thank you. I agree that the author acts recklessly and presents unwarranted conclusions. That said, in case of widespread genetic engineering, I would expect potential parents to make more specific choices that will result in some real tradeoffs. For example, it seems that longevity and fertility are somewhat negatively correlated, though this is precisely a field of study that requires a lot more research, because longevity was, until recently, a very underfunded topic. Most people, if they had a choice, would probably opt for longevity, given that you can now "outsource" reproduction to IVF and similar techniques. But over several generations, any small effects may be amplified.