DAVID EHRLICHMAN is cofounder and coordinator of the Converge network. With his colleagues, he has supported the development of over 50 impact networks, taking action on issues as diverse as economic mobility, human rights, access to science, and healthcare reform. He is the author of Impact Networks: Create Connection, Spark Collaboration, and Catalyze Systemic Change and producer of the documentary short Impact Networks: Creating Change in a Complex World, which features interviews with six acclaimed network leaders from around the world. Learn more at <a href="https://www.converge.net/"converge.net.