On the Power of Knowledge “There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don’t know. But there are also unknown unknowns. There are things we don’t know we don’t know.” Secretary of Defense Donald Rumsfield, clarifying U.S. policy on the war on terror at a Pentagon briefing. “Critics are like eunuchs. They know how to, but they can’t. Bravo, GaultMillau – you’ve won! Your ranking has cost the life of a man!” French chef Paul Bocuse, on chef Bernard Loissau, who is believed to have killed himself after his restaurant was downgraded by GaultMillau, a top food quide.