Dysgenics is, unfortunately, starting to look undeniable:http://www.pnas.org/content/pnas/early/2017/01/10/1612113114...

IQ slightly increases male reproduction but massively reduces female reproduction. This may select for dimorphism in the long term, which does not seem like a good outcome.

We will have the means to select for high IQ with embryo selection or iterated embryo selection. Hopefully we are not so in denial about what we are losing that we fail to allow this technology to be used.

I know China and Korea will not shun it.