The narration, often from Faith’s perspective, refers to Faith’s father as Mr. Darwin and the mother as Mrs. Darwin. Social Darwinism is the theory that there is a survival of the fittest among groups, countries, races, etc. Further, Tom’s ideas about race in Gatsby embody social darwinism. Thus, I wonder how the parents’ last name of Darwin relate to social darwinism? Surely, Mr. Darwin’s holocaust joke has something to do with it, but otherwise I’m pretty stumped.