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law-of-requisite-variety

A principle stating that only variety can absorb variety, requiring a system's regulatory variety to match the variety generated by its environment to maintain stability.

1 chapter across 1 book

Designing Freedom (1974)Stafford Beer

Pages 11–19

The chapter explores the exponential growth of variety in social systems and the resulting complexity that current institutions fail to manage due to their ignorance of scientific laws of organization. Stafford Beer applies Ashby's Law of Requisite Variety, arguing that effective regulation requires balancing individual variety with sufficient regulatory variety through both attenuation and amplification, and critiques the misuse of computers and cybernetics which often increase instability rather than control. He emphasizes the necessity of systemic models for intelligent management and calls for a fundamental redesign of institutions to harness modern tools for social stability.