By Birger Sevaldson
Donella Meadows suggested the concept of Leverage Points (Norwegian: "Inflytelsespunkter"). Leverage points ar places in a system where one could influence the system in a particular efficient way. The ZIP analyses and the Impact and Threshold analyses does cover some but not all of this. It is recommended to do a leverage point investigation of systems. Here is a nice visual introduction to leverage points: http://donellameadows.org/a-visual-approach-to-leverage-points/ And here a link to the original article of Donella Meadows http://donellameadows.org/archives/leverage-points-places-to-intervene-in-a-system/
Donella Meadows Leverage Points: 12. Constants, parameters, numbers (such as subsidies, taxes, standards).
Here is a video also found on the same webpage. It explains the Systems Dynamics approach
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