In this WSJ piecetoday, Bret Stephens draws a very useful parallel between the late Robert McNamara and our Beloved Leader — “whiz kids” who are so certain they know the answers that all they need do is draw up the plans for action by government. Stephens contrasts that sort with what economist William Easterly calls a “searcher.” That is to say, someone who realizes that he needs to search for answers and that if any are to be found they may not involve government.