Human beings can be selectively bred for various traits, but I don't think this is the issue for any intelligent, educated person since science is pretty clear

Human beings can be selectively bred for various traits, but I don't think this is the issue for any intelligent, educated person since science is pretty clear on the matter. I take issue with the idea that human being can be improved, specifically with the word "improved" or any other such term used instead. Improved is subjective at best and totally repulsive when one considers what "improved" might actually mean to those defining an improvement (Nazi eugenics program). Human nature is such that any human designed program to selectively breed human beings will ultimately become a gross perversion, since the program would require institutionalization, planned breeding, castration and outright murder. We humans tend to be somewhat ethical and decent on an individual level but on a social or national level we're repulsive, greedy, disgusting monsters. Frankly, we can't trust ourselves.