The "leaving ecosystems alone" ship sailed almost everywhere on Earth tens of thousands of years ago. Humans have always been a part of, and had impacts upon, t

The "leaving ecosystems alone" ship sailed almost everywhere on Earth tens of thousands of years ago. Humans have always been a part of, and had impacts upon, the ecosystems we've lived in. Certainly moreso in recent centuries. Not to say that further interventions will be helpful in "reestablishing balance". Even the concept of "balance" or homeostasis has long been recognized to not really exist in any ecosystem.