RODNEY BROOKS is Panasonic Professor of Robotics, emeritus, MIT; former director of the MIT Artificial Intelligence Laboratory and the MIT Computer Science & Artificial Intelligence Laboratory (CSAIL); founder, chairman, and CTO of Rethink Robotics; and author of Flesh and Machines. The Conversation: https://www.edge.org/conversation/rodney_a_brooks-the-cul-de-sac-of-the-computational-metaphor