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)