The kind of contagion Phillips is talking about isn’t something rational or even necessarily conscious. It’s not like a persuasive argument. It’s something much more subtle than that. “When I’m waiting at a traffic light and the light is red, sometimes I wonder whether I should cross and jaywalk,” he says. “Then somebody else does it and so I do too. It’s a kind of imitation. I’m getting permission to act from someone else who is engaging in a deviant act. Is that a conscious decision? I can’t tell.