True.  Eugenics belongs in the Darwin theory of genetics - breed better humans through selective practices.  We do this type of genetic control in pretty much everything else - dog breeds come to mind as the most obvious.  Plant cross pollination, grafting, cross-breeding and interbreeding of livestock are all examples of genetic manipulation.    In practice however, especially in the United States, was to force sterilize people deemed unworthy to the genetic pool(lunatics, dumb people, cripples/handicapped, criminals, and poor/uneducated people).  Poor person gets admitted to a hospital for a surgery, sterilize them during the procedure.  Get admitted to a mental hospital, sterilization would be part of the admission process.  Famed early social worker Margaret Sanger was a staunch proponent of forced sterilization, especially of the poor.    Some eugenics people were racist (blacks are inferior, Indians are inferior, Eastern Europeans were inferior, Italians were inferior, you get the picture!) but not all.  WEB DuBois was a noted black eugenicist.    One thing about eugenicists though - being physically FIT was a major component of eugenics.  Educated and physically fit = you get to breed.  IIRS, I want to say that one of the Tuskegee Institute's (Booker T. Washington's education for blacks program) projects was the "Talented Tenth", which put forth the conecpt that only the top tenth of each race should come together and breed a "super" race of humans, combining the good parts of all races into a single, (ugh, I hate this term) master race.  I could be wrong, it happened once before! Yeah, so Eugenics as a science is not "unscience" it just was used as a way to promote unscientific ideas.  However, the human genome being what it is, smart, fit parents have crippled, defective children.  Defective people have smart, fit children.  A wrong amino acid at 'x' point in the growth process changes everything, and a mutation occurs, even if just a minor mutation.  It would take a long, steady program of selective and inter-breeding over the course of many generations to make this work, and remove all possible mutations.  We are talking hundreds, if not, thousands of years.   I suppo  445b  se you could speed it up by keeping these people locked in a breeding lab their entire lives.