"In 2007, Paul Ingram and Michael Morris conducted a study of business executives at Columbia University. The executives were invited to a cocktail mixer, where they were encouraged to network with new people. Not surprisingly, the vast majority of executives at the event said their primary goal was to meet “as many different as people as possible” and “expand their social network”. Unfortunately, that’s not what happened. By surreptitiously monitoring the participants with electronic devices, Ingram and Morris were able to track every conversation. What they found was that people tended to interact with the people who were most like them…. [In fact] the only successful networker at the event was the bartender."