Sustainable economy is what is missing most of North America. A bad time now and I can not exit percent of my limited income, this phrase is so common now that the sales people in the supermarket and everywhere else is trained with replicas to overcome the obstacles to the signal agree . The real question is, probably, if there was ever a sustainable economy in the United States, if so then what happens to sustainable economic sustainability. You may not agree and believes the United States have never enjoyed sustained economic growth.