Not long ago I was shopping at a large supermarket in Boston when I could not help overhearing a conversation between a shopper pushing a big trolley and his child of about 5. “Dad,” said the child, “you said you would take only ten minutes, but we’ve been here for an hour. You are not being fair to me.” “It will only be,” said the shopper, “another ten minutes more; I love you very, very much, darling,” “But Dad,” said the 5-year-old seeker of fairness, “that is neither here nor there.”