@Silver, every time humans have tried to artificially select themselves, the selection has been usually on an unscientific basis. Hitler's views, that the Jews were inferior and Germans are the superior race, were primarily used as Propaganda so that Germans would unify and blindly support him. Also, the Eugenics movement in the early 1900s in the U.S., while based on scientific principles, was not humane. Mentally disabled people and even those who had slight dysfunction in cognition (i.e. low IQ) were given lobotomies that were performed in the hopes that they would not be a nuisance in society. The people who got lobotomies experienced a change in personality and were dysfunctional for the rest of their lives (think Rosemary Kennedy). As you can see by my two examples, selecting for a superior people by discouraging the reproduction of those with mental defects (psuedoscience or not), will inevitably mean some ethical standards will be violated.