Three views of one model
The toolbar switches between three views. VSM draws Beer's diagram in 2D or 3D. Value network maps the primary activities of System One, the actors around them and the flows between them. Recursion shows the hierarchy of viable systems, with the System-in-Focus marked. All three edit the same model, and the System-in-Focus is the same in each. This panel holds the settings and data: the Settings tab for the level, labels, conventions and colours, the Flows tab for what travels on each channel. Method in the toolbar shows the four steps (purpose, value network, recursion, VSM) beside whichever view is open. In the value network, squiggly lines are value flows; the straight lines of the VSM are its cybernetic channels.
What the model describes
Stafford Beer developed the Viable System Model in Brain of the Firm (1972), The Heart of Enterprise (1979) and Diagnosing the System for Organizations (1985). It sets out the functions any system needs to remain viable: to keep a separate existence in an environment that keeps changing.
The operational elements of System One produce the system. The metasystem (Systems Three to Five with Three-Star; Beer's books differ on whether System Two belongs to it) exists to serve them: System Two damps oscillation, System Three manages the inside-and-now, System Four the outside-and-then, and System Five supplies closure and identity. Each operational element is itself a viable system, so the same structure repeats at every level of recursion, and only through System One.
Terms follow Beer's books as collected in Pure VSM (cybernetic-futures wiki).
Beer's symbols
Amoeba Environment: fuzzy, changing, of far greater variety than the system
Circle Operational element of System One
Square Systems Three, Four and Five; local management (tilted in the square convention)
Triangle System Two anti-oscillation (pointing up) and Three-Star audit (pointing down)
Box Metasystem: a square box in one convention, a rhombus in the other
Algedonic signal Alerts rising from every local management, behind 3, 4 and 5, to System Five
Channels in this model
Beer lists six vertical channels in Diagnosing the System : Corporate Intervention, the Resource Bargain (with accountability), operational linkages, environmental intersects, System Two, and audit. The central command axis is drawn as two lines, Corporate Intervention and the Resource Bargain, running from System Three to each local management, which is the operation's own metasystem. The Three-Star audit is the sporadic exception that reaches the operations directly, from the environment side. The algedonic signal rises from every local management parallel to the Resource Bargain, behind Systems Three, Four and Five, to System Five; in 3D it runs on a plane behind the model.
System Five links to System Four and monitors the Three–Four homeostat; it has no direct line to System Three.
Two extensions can be switched on or off in the Model panel: System Four feeding the Resource Bargain, which reads the command axis as anticipatory, and a direct link between System One and System Four. Neither appears in the commonly reproduced diagram.
The drawing convention switches between a square metasystem box holding 3, 3*, 4, 5 and the System Two centre, with local managements tilted 45 degrees, and a rhombus metasystem with upright local managements. The System Two centre sits inside the metasystem; the Bridge option draws it on the boundary and, in 3D, puts all of System Two on its own plane between operations and metasystem. It is an interpretive option, prompted by a Stanford Medicine study (Nature Neuroscience , September 2026) reporting that the forebrain and midbrain arise from one progenitor lineage and the hindbrain from another.
Data flows and recursion
The Flows tab names what travels along each channel and in which direction; the moving dots follow those directions. The coverage bar shows how many channels carry something. An empty channel is worth asking about: in a real organization it often marks a missing function.
Load the model company to see a bicycle maker mapped across three levels. Fill gaps with standard flows gives any level a neutral starting point. In a Claude artifact you can also describe an organization and let Claude map it, then map each operation one level down from the inspector.
When you open an operation, its environment becomes the environment one level down and its local management becomes the metasystem, following Beer's recursion. Scroll toward any operation to zoom into it: the next recursion sits inside each circle, turned 45 degrees, and becomes the System-in-Focus as you arrive. Zoom far out to rise a level.
How the 3D view uses depth
The 3D model keeps the canonical layout and adds one dimension: the environment sits at the back, the operations in the middle, the metasystem in front. Channels that cross between domains become visible as slopes. Each solid is chosen so that seen face-on it is exactly Beer's symbol: spheres for circles, cubes for squares, prisms for triangles, an octahedron for the rhombus. The Depth slider controls the separation.
Controls
Drag Rotate (3D) or pan (2D)
Right-drag Pan; Shift-drag also works
Scroll Zoom; pinch on touch screens
Click Select an element and read about it
Shift-click Add to or remove from the selection
F Focus: show only the selection and what connects directly to it
Double-click Step into an operation's own viable system
Scroll into Zoom toward the pointer; keep going into an operation to enter its recursion
N Switch between the VSM and the value network
R Switch to the recursion view and back
L Value network: draw a flow (or drag an element's + handle)
2 / 3 Switch between 2D and 3D
C Recentre the model face-on
Right-click Menu: details, focus, centre here, lower levels, remove, diagnosis
Esc Leave focus, then clear the selection
Ashby's law of requisite variety underpins every channel: only variety can absorb variety. The model's channels exist to amplify the system's variety and attenuate the environment's until they balance.