About one in five Americans play video games at least once a day. Some do it for relaxation; others are possessed by the games and become addicted. The difference between the two groups seems to be that one group finds identity in the world and the other group finds identity in the games. Anthropologist T. M. Luhrmann, who has studied prayer among evangelicals, says prayer can similarly become an addiction. “When people use prayer to enhance their real-world selves, they feel good,” says Luhrmann. “When it disconnects them from the everyday . . . they feel bad” (New York Times, August 3).