Dining out one evening, I noticed six teenagers boisterously celebrating some event at a nearby table. Toward their end of their meal, one of them got up and produced a camera.

"Hey, wait a minute," one of her companions said. "You have to be in the picture too."

When I approached and asked if I could help, the girl who owned the camera was delighted. I snapped a picture of the group and then, being unfamiliar with the camera, I asked her, "Do you want me to take another in case that one doesn't come out?"

"Oh, no, that's okay," she chirped innocently. "I always get double prints."