This should be a heady time for theorists and practitioners of property law. Some of the most important recent proposals to improve human wellbeing rest on the expansion or reform of property rights. From Peru, the political economist Hernando de Soto recently captured the world\u27s attention by contending that a lack of property rights stands between the slum dwellers of the world\u27s poor countries and new horizons of prosperity. Nearer home, Yale economist Robert Shiller has proposed a new market in risk, essentially propertizing present expectations of good fortune, which would represent one of the most dramatic expansions in the domain of private property since labor power slipped the bonds of status-based obligation and became a fre...