There are two types of utopias: concrete and airy. Concrete utopias are found in Manhattan, Bogota, Havana, and Copenhagen. Airy utopias are the sort of things you find in Inhabitat—roads that absorb carbon, machines that clean the ocean, bottles that purify water. Those who are interested in airy utopias tend to believe the world does not need to fundamentally change. The market remains as is, you remain as you are, and technology does the rest. This is a fiction.