View source for Principles of the Self-Organizing System

'''William Ross Ashby''' or [[Ross Ashby]] (1903–1972) was a British psychiatrist and pioneer in cybernetics, the study of complex systems. He is known for developing principles of self-organizing systems.

==== Introduction to Ashby ====

Conducted influential research on homeostatic machines and adaptive systems.
Published "Design for a Brain" (1952) and "Introduction to Cybernetics" (1956).
Helped shift focus in cybernetics toward biological systems and adaptive behavior.
Developed the Law of Requisite Variety, a core concept in cybernetics.

==== Principles of Self-Organizing Systems ====

Ashby proposed several foundational ideas about how complex systems can spontaneously self-organize:

*'''Ultimate stability''' - Dynamic equilibrium where fluctuations get absorbed without runaway reactions.
*'''Multistability''' - Multiple stable equilibrium states possible in the same system.
*'''Homeostasis''' - Self-regulating mechanisms maintain essential variables within physiological limits.
*'''Adaptiveness''' - Systems change configuration to achieve ultimate stability when disturbed.
*'''Law of Requisite Variety''' - Control mechanisms must have sufficient diversity to cope with system complexity.

Ashby's principles revealed how order can emerge from the interactions of components without external control. They provided important models for understanding biological and social systems. His work remains influential across cybernetics and complex systems theory.

===Further Reading===
[http://pespmc1.vub.ac.be/ASHBBOOK.html Ashby's book "Introduction to Cybernetics" on Principia Cybernetica Web]

[[Introduction to Cybernetics]]