When Jake is replaced with an actress playing a drunken mother about to drive with her two kids in the car, an entire group of strangers works together to stop her. One man takes her car keys while another calls the police.
Dr. Keating says this experiment is especially telling because it proves there is strength in numbers. "It shows teamwork and how incredibly powerful you can be if you have a plan. Taking the keys away was a great idea," she says. "When one person in a room responds, the others say, 'Yes, we need to do something.'"