Watch that kettle... it's black

Goldman Sachs Group Inc. has been called a lot of things over the years, much of which isn't suitable for publication. One word that never stuck to the men in white shirts and black lace-up brogues, however, is stupid.That might explain what Hank Paulson, its chief executive, was doing at the National Press Club in Washington earlier this month lecturing on Restoring Investor's Confidence: An Agenda for Change. Paulson, the head of one of the world's most influential investment banks, made t