There were many problems with this line of thinking

At that time, many people believed in eugenics,the idea that desirable and undesirable genetic traits could and should be controlled in humans through selective breeding.There were many problems with this line of thinking,among them the idea that intelligence was not only fixed and inherited,but also linked to a person race.Under the influence of eugenics,scientists used the results of the military initiative to make erroneous claims that certain racial groups were intellectually superior to others.