Rodney Brooks

• 1. Introduction

  ›

  Rodney Brooks once wrote about something he considered almost comical. His colleagues had taken to describing Pluto's orbit as the planet performing computations on forces. Brooks, born on the 30th of December 1954 in Australia, spent his career arguing that this kind of thinking was wrong about planets. It was also wrong about robots. He directed the MIT Computer Science and Artificial Intelligence Laboratory from 1997 to 2007. That placed him at the center of one of the world's foremost AI research institutions. Yet his most radical contribution was neither a product nor a program. It was a challenge to the assumptions his field had built itself on. How much does a machine need to think before it can usefully act?

• 2. Behavior Over Computation

  ›

  At Stanford University in 1981, Brooks completed a PhD in Computer Science under the supervision of Thomas Binford. His background was unusual. Before Stanford, he had earned a master's degree in pure mathematics from Flinders University of South Australia. That combination would shape a career spent questioning how robotics defined intelligence.

  The challenge Brooks posed most directly came in a 1990 paper titled "Elephants Don't Play Chess." Elephants navigate complex environments and interact with other animals without any apparent need for abstract reasoning. Brooks argued that robots trying to work alongside humans did not primarily need to master abstraction. They needed sensory-motor coupling with the environment, grounded in the proprioceptive sense critical to hand-eye coordination.

  Allen, a robot Brooks and his team introduced in the late 1980s, operated using subsumption architecture. This was a layered system allowing useful behavior to emerge from simple reactions rather than from centralized symbolic reasoning. Allen did not compute a detailed model of the world before acting. It simply acted.

  The 1990 paper also pointed toward something Brooks observed about human cognition. He wrote that vision, sound-processing, and early language are perhaps the keys to how the brain is organized. That observation pointed away from purely symbolic AI and toward robots grounded in sensory experience. Brooks joined the MIT faculty in 1984, and within a decade, his ideas would be tested not just in laboratories but in commercial products.

• 3. The Company Builder

  ›

  In 1997, a documentary film called "Fast, Cheap & Out of Control" featured Brooks and his work, reaching audiences far beyond academic journals. He had been building companies well before that recognition arrived. Among the ten founders of Lucid Inc. was Brooks, who worked with the company until it closed in 1993. Before Lucid closed, he had already co-founded iRobot with two former students, Colin Angle and Helen Greiner.

  Heartland Robotics, later renamed Rethink Robotics, was Brooks's next major industrial venture. He served as its co-founder, Chairman, and Chief Technical Officer. In 2019, he co-founded Robust.AI and took on the same Chief Technical Officer role there.

  In 2004, the National Academy of Engineering admitted Brooks as a member. The formal citation recognized his contributions to the foundations and applications of robotics. It specifically credited him with establishing the consumer and hazardous environment robotics industries. He reached general audiences through TED main-stage talks in 2003 and 2013, both addressing robots, artificial intelligence, and their role in everyday life. Long before Rethink Robotics or iRobot existed, Brooks had used Fischertechnik and Lego components in experiments aimed at building robots capable of self-replication.

• 4. Robots in the World

  ›

  Baxter arrived in 2012, introduced by Rethink Robotics as a machine designed to safely interact with the humans working next to it. It was designed to be programmable for simple tasks. Its operating cost was projected to be equivalent to paying a human worker four dollars an hour. The robot was built to stop automatically if a person appeared in the path of its arm. It also carried a prominent off switch that any nearby worker could use at any moment. Rethink Robotics framed Baxter as the robotic analogue of the early personal computer: broadly usable and intended to change the nature of work.

  Among the machines Brooks built were mini-robots used in oil well exploration without cables. Others searched for survivors in the wreckage at Ground Zero in New York. Robots developed from his work were also deployed in medicine, performing robotic surgery.

  In 2024, Robust.AI introduced Carter, a mobile robot. In June of that same year, Brooks said publicly that humans overestimate the abilities of generative artificial intelligence. That judgment came from four decades of building machines that had to act in an uncontrolled world. Carter was the latest product of that commitment.