Integrative systems methodology: Heuristic for requisite variety

Governance and Metagovernance: On Reflexivity, Requisite Variety, and Requisite Irony

There has been growing interest in the past twenty years or so in the potential contribution of new forms of governance to solving coordination problems in and across a wide range of specialized social systems (such as the economy, the legal system, the political system, and the health system) and in the lifeworld (or, broadly understood, civil society). This interest is reflected in growing am...

Integrative Systems Methodology

Action Variety of Planners: Cognitive Load and Requisite Variety

The complexity of planning tasks have increased over the past decade. There is relatively poor understanding what the implications are of increased task complexity in planning and scheduling operations. Previous work in the behavorial sciences have investigated the concept of cognitive load, addressing both task complecity and task workload or stress, and have concluded that decision makers ten...

Requisite variety, autopoiesis, and self-organization

Ashby’s law of requisite variety states that a controller must have at least as much variety (complexity) as the controlled. Maturana and Varela proposed autopoiesis (self-production) to define living systems. Living systems also require to fulfill the law of requisite variety. A measure of autopoiesis has been proposed as the ratio between the complexity of a system and the complexity of its e...

Requisite variety and its implications for the control of complex systems

Recent work on the fundamental processes of regulation in biology (Ashby, 1956) has shown the importance of a certain quantitative relation called the law of requisite variety. After this relation had been found, we appreciated that it was related to a theorem in a world far removed from the biological—that of Shannon on the quantity of noise or error that could be removed through a correction-...