The question led to his theory of disruptive innovation, introduced in the pages of Harvard Business Review in 1995, and popularized two years later in The Innovator’s Dilemma. With me to discuss it are Derek van Bever, senior lecturer and director of the Forum for Growth and Innovation at Harvard Business School, Rita McGrath, professor at Columbia Business School, and Felix Oberholzer-Gee, professor at Harvard Business School. AMY BERNSTEIN: That’s Derek van Bever and Felix Oberholzer-Gee of Harvard Business School, and Rita McGrath of Columbia Business School.