“For example, consider the importance of insincere compliments. We all know the gold standard of white lies, in which a woman who is less than svelte puts on a slinky new dress and asks her husband, “Do I look fat in this?” The man does a quick cost-benefit analysis; he sees his whole life pass before his eyes if he answers with the brutal truth. So he tells her, “Darling, you look beautiful.” Another evening (marriage) saved.”