I also feel that this is all so much hand-wringing in the end. We're just at the start of understanding how the genome and proteome interact, let alone the dev

I also feel that this is all so much hand-wringing in the end. We're just at the start of understanding how the genome and proteome interact, let alone the development from one cell to one trillion. Likely, barring some very extreme and barbaric live-human tests, we'll never really know how this all works. Gene editing will be mostly used in beneficial ways, not in these extreme ways. Diseases will be bred out of our species, cancers will be sequenced and then better chemo will be used against them (already happening), CRISPR CAS-9 will be used for sensory restoration techniques like elminating color-blindness and hearling loss. Sure, a few million eyes will be blue instead of brown, and sure, there will be a lot of taller people. But, due to the complexity of development, the genome, and the (correct) adversion to human experimentation, things as complex as 'smartness' or 'tenacity' or 'beauty' will not be modified in such extreme ways.