Never confuse social darwinism and eugenics. Social Darwinism is when you breathe from hunger under the fence, because there was no money for a doctor, and without treatment there is no working capacity. And eugenics will kill you so that you thank her, she will give money to your mother for early fetal examination, and when she learns that she has passed on to you hereditary disease, she will just try again, and you will not even learn that once he died and from the second attempt was born a completely different person.