answer:If you’re referring to the superiority or inferiority of an ethnic or racial group see the link. There is ample historical and scientific proof that this is bunk. If you’re referring to individuals on a bell curve continuum of IQ and learning ability, that’s a different story. One has only to encounter Down Syndrome individuals and similar other categories to know that IQ and speed of learning abilities cover a wide range. But one has to ask whether that is the only criteria by which a persons value should be calculated. There are ineffable qualities such as a loving trusting nature, cheerfulness in life’s circumstances, loyalty, etc etc. whose worth is incalculable. My sister adopted a child with Down Syndrome in infancy. She was told by the Dept. of Social Services that the parents gave her up for adoption because they just didn’t think they could cope with this. (They were both business professionals, the father a lawyer. So it wasn’t for lack of financial resources.) Well, that was their loss. She has added so much to our family with her loving nature. They have no idea how profound a loss for them when they passed up the opportunity to be loved by this child. That’s not necessarily science but it is fact nonetheless. Those who think that culling the race of those deemed “genetically inferior” need to re-evaluate their priorities. Should parents now abort a fetus who will inherit deafness or Down Syndrome or any of a number of handicaps? Will it really improve society as a whole? Profound questions worth asking. eugenicsarchive.org A tour around this site should provide interesting info. to elucidate the issue. Exactly how would an entire society of geniuses function? Would there be anyone left willing to do the mundane tasks AND find satisfaction in doing so?