Concepts are connected by relationships drawn from Pask's Conversation Theory. Start here if you're new.
Why these terms? The relationships between concepts use vocabulary from
Gordon Pask's Conversation Theory. Pask — who studied under Ashby — developed the idea of
entailment meshes: networks showing how concepts necessarily lead to other concepts.
We use his terminology so the same vocabulary works across all thinkers on this platform.
Read each relationship as a sentence: "Concept A [RELATIONSHIP] Concept B"
ENTAILS Logical Implication
If A is true, then B necessarily follows. You cannot have A without B.
A → ENTAILS → B = "If A, then necessarily B"
Viable System Model ENTAILS System One — If you have a viable system, you necessarily have operational elements.
DERIVES_FROM Prerequisite / Dependency
To understand A, you must first understand B. B is a prerequisite for A.
A → DERIVES_FROM → B = "To understand A, you need B first"
Variety Engineering DERIVES_FROM Requisite Variety — You need Ashby's law before you can engineer variety in organizations.
GENERALIZES Abstracts / Extends
A is a more abstract, general, or developed form of B. A takes B to a higher level.
A → GENERALIZES → B = "A is a more abstract form of B"
Metasystem GENERALIZES System Three — The metasystem concept abstracts the coordination function beyond just System Three to include Four and Five.
PARTICULARIZES Instance / Specific Case
A is a concrete example or specific instance of B. A makes B tangible.
A → PARTICULARIZES → B = "A is a specific instance of B"
System Three Star PARTICULARIZES System Three — The sporadic audit channel is a specific implementation of System Three's monitoring capability.
CONSTRAINS Limits / Bounds
A places limits on B. A defines the boundaries within which B operates.
A → CONSTRAINS → B = "A limits what B can achieve"
System Five CONSTRAINS System Four — Organizational identity and policy limit what strategic options can be pursued.
ENABLES Makes Possible
A creates the conditions for B to exist. Without A, B wouldn't be possible.
A → ENABLES → B = "A makes B possible"
Environmental Scanning ENABLES Adaptation — Monitoring the environment makes organizational adaptation possible.
CONTRASTS Differs From
A and B are different in important ways. Understanding the contrast illuminates both.
A ↔ CONTRASTS ↔ B = "A and B differ in important ways" (bidirectional)
Autonomy CONTRASTS Embedment — Local self-governance and hierarchical containment create a productive tension in viable systems.
ANALOGOUS_TO Structural Similarity
A and B share structural or functional similarities, often across different domains.
A ↔ ANALOGOUS_TO ↔ B = "A works like B" (bidirectional)
Variety Amplification ANALOGOUS_TO Variety Attenuation — Both are complementary mechanisms for engineering variety, one expanding capacity, the other reducing demand.
REQUIRES Necessity
A needs B to function or be meaningful. B is essential to A's existence.
A → REQUIRES → B = "A needs B to function"
Recursion REQUIRES Viable System Model — Recursive structure requires that each level maintain the full VSM architecture.
EXTENDS Builds Upon
A builds on and broadens B, taking it beyond its original scope.
A → EXTENDS → B = "A builds on and broadens B"
Variety Engineering EXTENDS Requisite Variety (Ashby) — Beer takes Ashby's theoretical law and develops it into practical organizational methods.
ILLUSTRATES Concrete Example
A is a concrete example or illustration of B's principles.
A → ILLUSTRATES → B = "A is a concrete example of B"
Chart Two ILLUSTRATES Recursion Level — The diagnostic chart is a concrete tool that reveals recursive structure in an organization.
CORRESPONDS Cross-Thinker Parallel
A and B develop in parallel or have structural correspondence across different thinkers.
A ↔ CORRESPONDS ↔ B = "A parallels B"
Beer's Variety Attenuation CORRESPONDS Ashby's Constraint — Both describe mechanisms that reduce variety, one in organizational terms, the other in mathematical terms.
Tip: Follow DERIVES_FROM chains to find prerequisites. Follow ENTAILS to see what a concept necessarily implies. Follow EXTENDS to see how Beer builds on Ashby. Only CONTRASTS, ANALOGOUS_TO, and CORRESPONDS are bidirectional — all others are directional.