We Can't Manage Ecosystems, We manage the interactions with them

I read the following from one of my favourite blogs, How to Save the Word:

A great quote from Kay & Schneider's article Embracing Complexity from the 1994 Alternatives journal:
Systems theory suggests that ecosystems are inherently complex, that there may be no simple answers, and that our traditional managerial approaches, which presume a world of simple rules, are wrong-headed and likely to be dangerous. In order for the scientific method to work, an artificial situation of consistent reproducibility must be created. This requires simplification of the situation to the point where it is controllable and predictable. But the very nature of this act removes the complexity that leads to emergence of the new phenomena which makes complex systems interesting. If we are going to deal successfully with our biosphere, we are going to have to change how we do science and management. We will have to learn that we can't manage ecosystems, we manage our interactions with them. Furthermore, the search for simple rules of ecosystem behaviour is futile.