Sitting people down and lecturing them rarely works, because it makes them defensive—and when they’re defensive, they hide things from you. Work side by side with them in a cooperative activity, however, and you’ll lower their guard and get them to open up. That’s why hostage negotiators try to get hostage takers to commit to a shared activity, such as allowing food or medical supplies into a building. It’s also why the elders at an Amish barn-raising or quilting bee uncover more deep secrets than a spy in bed with a drunken politician.
