" What is required of us is restraint and humility. We can put up barriers on bridges to make it more difficult for that momentary impulse to become permanent. We can instruct young people that the kind of reckless drinking that takes place at a fraternity party makes the task of reading others all but impossible. There are clues to making sense of a stranger. "

― Malcolm Gladwell , Talking to Strangers: What We Should Know About the People We Don’t Know