Before becoming enraged, you should check out the literature on the subject. While its breadth is wide, it is worthwhile. Though you will have to cover, genetics, intelligence, and generally behavioral science it nevertheless allows you to see how sociological explanations in most cases are complete bunk and what empirical evidence states. As for your family member, I can't speak for him/her, but perhaps the intention was motivation? Like, "Show em what we can really do! Prove em wrong!" kind of inspiration.