Interesting, thanks for the explanation. In your example of what it took to change the system re smoking, you've described the effects of the "levers" that I l

Interesting, thanks for the explanation. In your example of what it took to change the system re smoking, you've described the effects of the "levers" that I listed above. In other words, Donella's list is better viewed is descriptive, not prescriptive. Maybe a better way to describe her list would be not as "places to intervene in a system", but lenses through which to view the changes wrought by the levers we have? Anyways, it still seems to me that taxes are one of the primary tools we have to effect change, and the taxes themselves (individually or together with what we then do with the money generated) can fulfill most, if not all, of the categories on Donella's list.