Rodney Brooks

Rodney Brooks is the engineer who looked at the robots his field produced and concluded the entire enterprise had been assembled upside down. Where the artificial intelligence orthodoxy of the 1980s treated perception and locomotion as peripheral plumbing and symbolic reasoning as the essential core, Brooks reversed the priority: evolution had spent billions of years perfecting the capacity to act in a physical world, and only a sliver of recent time on language and chess. His landmark papers—Intelligence Without Representation and Elephants Don’t Play Chess—proposed that genuine intelligence must be grounded in sensorimotor reality and built up from robust simple behaviors, not down from abstract plans, a conviction he formalized in the subsumption architecture. The robots that resulted—culminating in the Roomba that entered tens of millions of homes—were proof of concept: embodied cognition outperformed the planning machines whenever the environment was real and uncontrolled. Brooks went on to build humanoids, co-found iRobot and Rethink Robotics, and absorb the lessons of