Eugenics of intelligence

Two perspectives on genetics of intelligence.

First:
Scientists have de-activated the extra chromosome #21 in-vitro, potentially blazing a path for gene therapies for Down syndrome (Trisomy 21).

And then:
Chinese scientists seek genetic basis for IQ, potentially allowing embryo selection for extra-smart babies through IVF.

How many people who feel comfortable with eliminating Down syndrome (whether by gene therapy or by selective abortion) would feel equally placid about the prospect of pitting their own children against genetically engineered geniuses?  What if some future society decides that genius is to become the new normal?

Yes, this is personal.