Exactly my thoughts. Assortative mating has been happening all along, equality between the sexes is the only thing that has changed here.<p>Back then even if you didn&#x27;t get married young, most men did not have options to marry a female doctor, banker, lawyer, etc. You would meet a nice secretary at work and probably use similar criteria to today (pretty, compatible personality wise, smart). In 2015 that smart secretary is a smart doctor, none of this is surprising.