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System Dynamics

System dynamics (SD) is an approach to understanding the nonlinear behaviour of complex systems over time.

Donella Meadows - A Philosophical Look at System Dynamics

Donella Meadows - Sustainable Systems

Places to Intervene in a System

In order of increasing effectiveness

The sizes of buffers and other stabilizing stocks, relative to their flows.
The structure of material stocks and flows (such as transport networks, population age structures)
The lengths of delays, relative to the rate of system change
The strength of negative feedback loops, relative to the impacts they are trying to correct against
The gain around driving positive feedback loops
The structure of information flows (who does and does not have access to what kinds of information)
The rules of the system (such as incentives, punishments, constraints)
The power to add, change, evolve, or self-organize system structure
The goals of the system
The mindset or paradigm out of which the system—its goals, structure,rules, delays, parameters—arises
The power to transcend paradigms

Leverage Points

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Written October 25, 2021