9) Constants, parameters,numbers ( subsidies, taxes, standards)

8) Regulating negative feedback loops.

7) Driving positive feedback loops.

6) Material flows and nodes of material intersection.

5) Information flows.

4) The rules of the system ( incentives, punishments, constraints ).

3) The distribution of power over the rules of the system.

2) The goals of the system.

1) The mindset of a paradigm out of which the system – it’s goals,


by Donella Meadows

(In INCREASING order of effectiveness)