Dr. Donald Sull is Professor of Strategy and Faculty Director of Executive Education at London Business School. The Economist identified his theory of active inertia as an idea that shaped business management over the past century, and Fortune listed him among the ten new management gurus. His publications include several best-selling Harvard Business Review articles, and the award-winning books "Why Good Companies go Bad" and "Made in China." Sull has three degrees from Harvard, where he taught entrepreneurship. He worked as a consultant with McKinsey & Company, and a management-investor with the leveraged buyout firm Clayton & Dubilier