Appreciating Systems

Appreciating Systems for Genuine Efficiency
Home » Posts tagged 'Principia Cybernetica'

What is Ross Ashby’s Law of Requisite Variety? (#systemsthinking background material)

This is a concept that I’m using since quite some time now and that I seemed to understand rather intuitively though, necessarily at a general level.

What it basically says is that for a controller to remove noise from a signal, it needs to have a minimum variety that depends on the signal it needs to remove noise from and the variety of the result that it deems Good. Which Ross Ashby summarized as “only variety can kill variety“, where the killing part was about killing the variety of noise. Read more »

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