We LOVE Sam and his wife Sarah, who went to Princeton herself. Special people. Sarah babysat our children. Sam and my son used to work out together in the offseason. Sam should write a book about the math of "employment risk" professions like sports, acting, drug dealing, commodities trading, etc. The subject was dealt with briefly in "Freakonomics" but Sam and Sarah are statisticians who have lived the paradox. Only the top few percent in these professions make it big, but they make it SO big that they create a huge supply of backups who barely hang on and are usually better off doing something else. As a math guy - I think the subject is super interesting.