" What sets the Holy Fool apart is a different sense of the possibility of deception. In real life, Tim Levine reminds us, lies are rare. And those lies that are told are told by a very small subset of people. That’s why it doesn’t matter so much that we are terrible at detecting lies in real life. Under the circumstances, in fact, defaulting to truth makes logical sense. If the person behind the counter at the coffee shop says your total with tax is $6.74, you can do the math yourself to double-check their calculations, holding up the line and wasting thirty seconds of your time. Or you can simply assume the salesperson is telling you the truth, because on balance most people do tell the truth. "

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