We are taught that the world is a top-down place. Acclaimed author Matt Ridley shows just how wrong this is in his compelling new book. We are taught that the world is a top-down place. Generals win battles; politicians run countries; scientists discover truths; artists create genres; inventors make breakthroughs; teachers shape minds; philosophers change minds; priests teach morality; businessmen lead businesses; environmentalists save the planet. Not just individuals, but institutions too: Goldman Sachs, the Communist Party, the Catholic Church, al Qaeda - these are said to shape the world. This is more often wrong than right.