"Incredible," Watson says, with a disbelieving shake of his head. "I would never have... Now, see here. Water. Eat some of the nuts. We cannot get distracted on this matter, no matter how many other fabulous things might be in front of us."

There's a touch of his Stern Doctor Voice, there, which of course has a bit of Stern Army Surgeon mixed in. Just a bit.

"What does one do with a photograph that is on your telephone?" he asks. "What if you want it in a frame, or do people of 2013 not do that anymore?"