 This is American Thought Leaders, and I'm Jan Jekielek. Dr. Ben Carson, such a pleasure to have you back. I was just talking with a friend, and he mentioned to me that when you were doing your surgery on conjoint twins at the head, it was a 31-hour surgery. So how does a person do that? It's sort of like being in the jungle with a hungry tiger. You're not going to go to sleep. You're not going to relax until you get out of it. And the time actually goes by very quickly because you're so intent on what you're doing.