A further point to this- I don't believe our science is advanced enough to define better even in a perfect world where subjective considerations are somehow dis

A further point to this- I don't believe our science is advanced enough to define better even in a perfect world where subjective considerations are somehow discarded. I'm thinking of stuff like people prone to sickle cell anemia having increased malarial resistance. I believe even an otherworldly morally correct implementation of eugenics would not account for unknown quirks like this and be counter productive in the long term.