" In a paper analyzing the data, Chetty and his coauthors noted two important factors that explained the uneven geographic distribution of opportunity: the prevalence of single parents and income segregation. Growing up around a lot of single moms and dads and living in a place where most of your neighbors are poor really narrows the realm of possibilities. It means that unless you have a Mamaw and Papaw to make sure you stay the course, you might never make it out. "

― J.D. Vance , Hillbilly Elegy: A Memoir of a Family and Culture in Crisis