Recently, a friend related a humiliating anecdote: he had been having digestive problems, and his gastroenterologist requested detailed reports about his bowel movements. Instructed not to be squeamish about painting an accurate picture, he composed a long missive about the consistency, color, and frequency of his eliminations — only to realize that he had sent the email to his employer, instead of his doctor. He apologized profusely, and received a...