Atlas record: https://www.aitimeline.dev/en/events/evt-0150/
Research · March 1986
Subsumption architecture
Brooks proposed building a robot as layers of behaviour, each wiring perception straight to action, with higher layers suppressing lower ones.
Why it matters
A robot began acting without an internal model of the world, a direct refusal of the sense-plan-act scheme.
Each layer is a simple machine running asynchronously that does not wait for a shared picture. Lower layers keep working as higher ones are added, so the system degrades gradually instead of failing whole. Brooks stated the thesis: the world is its own best model. Robots on this architecture walked around the laboratory while planners were still computing the first step.
Event record
- Event date
- March 1986
- Timeline date
- Event date
- Verification
- Sources gathered automatically · September 22, 2026
- Lines
- ID
- evt-0150
IEEE Journal of Robotics and Automation 2(1), 1986; earlier as AI Memo 864.
Related events
Earlier
- Related Frames 1974
It denies the need for a central knowledge representation at all.
- Contrasts Shakey 1969
The robot acts without building a world model, the step Shakey's scheme rested on.
- Extends Grey Walter's tortoises 1949
The historical account of the tortoises names Brooks among those who took up Walter's biologically based robotics decades later.
Same period
Later
- Builds on A six-legged robot walks with no central control 1989links to this record
The memo opens by citing the subsumption architecture as its own earlier work and builds the network from its augmented finite state machines; walking is what emerges from such a network.
- Extends Elephants Don't Play Chess 1990links to this record
It develops the 1986 architecture into a general position on knowledge representation.
- Related The first RoboCup 1997links to this record
The competition tests behaviour-based architectures in conditions where planning ahead is impossible.
- Related Kismet: a robot regulates interaction with its face 1998links to this record
The same MIT laboratory twelve years on: instead of layers of behaviour for motion, a system of drives, emotions and facial expressions that regulates interaction with a person.
- Related Sony AIBO 1999links to this record
Behaviour is assembled from simple reactions rather than from a plan built on a world model.
- Related ASIMO 2000links to this record
The motion is built on precise trajectory planning rather than reactive layers of behaviour.
- Extends Roomba 2002links to this record
The vacuum acts on reactive rules without a map, exactly as the subsumption architecture proposed.