Sure but we then need to acknowledge that the root cause is the level of the human population on this planet. I don't think we should get to sustainability by

Sure but we then need to acknowledge that the root cause is the level of the human population on this planet. I don't think we should get to sustainability by in effect keeping people poor and restricting what they are allowed to consume. Rather we should get to a sustainable number of human beings allowed to be free, to travel, to have a good life.