“…On the one hand, by explicitly acknowledging the dual nature of property rights, the new information theory challenges the established understanding of property rights in law and economics and Coasean property rights theory. The authors convincingly show that the way in which Coasean and post-Coasean law and economics and property rights theory treat and define property rights (as rights in personam, and therefore as a bundle of interpersonal use rights) is not only analytically incorrect from the point of view of property law, but also logically inconsistent with the main message of Coasean law and economics and with the Coase theorem itself (Lee and Smith, 2012;Smith, 2001b, 2011;Smith, 2012a): precisely because the nature and form of legal institutions depend on the level of transaction cost, a correct Coasean analysis should reach the conclusion that, in a world of positive transaction costs, it is optimal (from a social welfare point of view) to define property rights as impersonal rights in rem, consistent with the classical approach (Arruñada, 2003(Arruñada, , 2012a(Arruñada, , 2016Lee and Smith, 2012;Merrill & Smith, 2001bSmith, 2012a).…”