Derek Sivers has given several short, but great talks at TED conferences. Concise and funny seems to fit his style. In this one, Derek uses an odd example to explain leadership and how to start a movement. Movements start with one person, a visionary, willing to step out and be different. But until someone else joins them, he will be a lone nutcase. Momentum cannot begin until the second person joins the movement. There are two types of leadership in this example. We need creative people to find new ways to do things, but we also need people to recognize the good ideas. We always talk about great leadership. Derek reminds us that great leadership is more about the idea or the group than the person.