Efficiency, optimization and new metrics will not save us. We won't preserve the world by becoming more efficient at exploiting its resources nor by growing until every country has a rich standard of living. Ask yourself, even at the utmost efficiency, can the world really support billions of people living at even just the standard of the Western middle class? The negative externalities of the global economy are not signs of dysfunction but byproducts of its function. We need a change of system, not in system. If not, I fear that we are all headed towards Chinese-style authoritarian capitalism to deal with these various tragedies of the commons.