Then who would do the day-day work? The world is already ordered along these lines and, with the exception of certain policies, seems to be working pretty well.
Technology (medical, information, etc) and business is developed, financed and advanced by the most intelligent ie graduates of the world's top 25 universities. 2nd tier managers and distributors are employed to manage growing organizations and deliver goods & services. Manual labor provides actual assembly (unless robots are building robots) and service/maintenance. A criminal underclass exists to employ those in law enforcement.
Overall unemployment is under 5%. What would be achieved via eugenics?
Just making sure that you realize that the person you were responding to was not being serious. However, the person they were replying to and quoting WAS being serious.
My comments were sarcastic, sorry you missed that...