The never-ending quest to understand why some people are more easily able than others to achieve the American Dream has a new, intriguing wrinkle.
It’s not just where you attend school, where you live or your family structure (although, the last of those matters tremendously) that determines whether and how upwardly economically mobile you will become.
Your friendships matter, too, specifically if they cut across socioeconomic lines; that is, if you develop relationships with people who are richer than you.