---
id: vsm-framework
name: vsm_framework
artifact_type: content
description: Stafford Beer's Viable System Model reference for economic analysis
version: 1.0.0
---

# Stafford Beer's Viable System Model (VSM)

The Viable System Model (VSM) is a model of the organisational structure of any
autonomous system capable of producing itself. It was created by management
cybernetician Stafford Beer in his books *Brain of the Firm* (1972) and
*The Heart of Enterprise* (1979).

## Core Principle: Viability

A viable system is any system organised in such a way as to meet the demands
of surviving in a changing environment. One of the prime features of systems
that survive is that they are adaptable. The VSM expresses a model for a
viable system, which is an abstracted cybernetic description applicable to
any organisation that is a going concern.

## The Five Systems

### System 1 (S1) — Operations

The primary activities that produce the organisation's purpose. These are the
operational units that directly create value. Each operational element is itself
a viable system (the principle of recursion).

**In economic terms:** Productive enterprises, factories, farms, workshops,
individual labourers performing specialised tasks, merchant operations.

**Key properties:** Autonomy within constraints, self-organisation,
direct engagement with the environment.

### System 2 (S2) — Coordination

The information channels and bodies that allow the primary activities in
System 1 to communicate with each other and that allow System 3 to monitor
and coordinate activities. System 2 dampens oscillations and resolves
conflicts between operational units.

**In economic terms:** Market price mechanisms, trade customs, standard
weights and measures, commercial law, banking clearinghouses, trade guilds.

**Key properties:** Anti-oscillatory, dampening, scheduling, conflict
resolution, standardisation.

### System 3 (S3) — Control / Operational Management

The structures and controls that establish the rules, resources, rights,
and responsibilities of System 1 and provide an interface between Systems 1
and Systems 4/5. System 3 represents the day-to-day control of the
organisation. It optimises the internal environment.

**In economic terms:** Government regulation of trade, taxation policy, labour
laws, enforcement of contracts, the "invisible hand" as emergent internal
regulation, guilds and corporations governing members.

**Key properties:** Internal regulation, resource allocation, accountability,
synergy extraction, performance management.

### System 3* (S3*) — Audit / Monitoring

The audit and monitoring channel that allows System 3 to verify information
coming from System 1 through channels other than those provided by System 2.
System 3* provides sporadic, direct access to operational reality.

**In economic terms:** Market inspections, quality checks, auditing of accounts,
surprise investigations into trade practices, verification of weights and measures.

**Key properties:** Sporadic direct investigation, reality checking, bypassing
normal reporting channels.

### System 4 (S4) — Intelligence / Adaptation

The bodies and processes that look outward to the environment to monitor
how the organisation needs to adapt to remain viable. System 4 captures
all relevant information about the outside-and-then environment. It is
responsible for strategic responses.

**In economic terms:** Foreign intelligence about trade opportunities,
market research, new technology adoption, colonial exploration and trade
route development, understanding of foreign economic systems.

**Key properties:** Environmental scanning, future orientation, strategic
planning, modelling, research and development.

### System 5 (S5) — Policy / Identity

The policy-making body that balances demands from Systems 3 and 4 and defines
the identity, values, and purpose of the organisation. System 5 provides
closure to the whole system and represents its supreme authority.

**In economic terms:** Sovereign authority, constitutional principles governing
economic policy, national economic identity, the philosophical foundations
of economic systems (mercantilism vs. free trade), the overarching purpose
of the commonwealth.

**Key properties:** Identity, ethos, supreme command, policy closure,
balancing internal and external perspectives.

## Key Concepts

### Recursion

Every viable system contains and is contained in a viable system. The same
five-system structure recurs at every level of organisation. A workshop is
a viable system within a factory, which is a viable system within an
industry, which is a viable system within a national economy.

### Variety

A measure of the number of possible states of a system. The Law of Requisite
Variety (Ashby's Law) states that only variety can absorb variety. A
controller must have at least as much variety as the system it controls.

### Requisite Variety

The principle that for effective regulation, the variety of the regulator
must match the variety of the system being regulated. This is achieved
through variety attenuation (reducing the variety coming up from operations)
and variety amplification (increasing the variety of management's responses).

### Attenuation and Amplification

Variety engineering mechanisms. Attenuation reduces variety (e.g., reporting
summaries, statistical aggregation, standardisation). Amplification increases
variety (e.g., delegation, empowerment, decentralisation).

### Algedonic Signals

Emergency signals that bypass the normal management hierarchy to alert
higher systems of critical situations requiring immediate attention. Named
from the Greek words for pain (algos) and pleasure (hedone).

**In economic terms:** Market panics, famine signals, sudden price collapses,
trade embargoes, economic crises that demand immediate sovereign intervention.

### Autonomy

The degree of freedom granted to operational units (System 1) to self-organise
within constraints set by System 3. Beer argued that maximum autonomy
consistent with systemic cohesion yields maximum viability.

### Viability

The capacity of a system to maintain a separate existence and survive in a
changing environment. A viable system continuously adapts while maintaining
its identity.
