Teichmuller geodesics that do not have a limit in PMF

We construct a Teichmuller geodesic which does not have a limit on the Thurston boundary of the Teichmuller space.Comment: published versio

CBA at the PTO

What are the costs and benefits of patent laws? While Congress and the courts are often able to evade this difficult question, there is one institutional actor that is not only well-advised but also required to consider costs and benefits: the Patent and Trademark Office, which—as an administrative agency—is required by executive order to conduct cost-benefit analysis of all economically significant regulations. Yet the agency’s efforts have been less than satisfactory. In its cost-benefit analysis, the PTO overlooks crucial functional considerations, misunderstands basic precepts of patent economics, and resists quantification when quantification is required. In combination, these shortcomings suggest that the PTO has not correctly measured the social costs and benefits of the rules it creates, in part because it has adopted an overly limited view of the welfare effects of intellectual property and the agency’s own role in promoting or discouraging IP. In other instances, the PTO has promulgated rules that will likely have tremendous economic significance without recognizing their importance or conducting a cost-benefit analysis. These errors cast doubt on whether the PTO’s regulations will increase or diminish social welfare. Before the PTO is granted any additional substantive authority, reform will be necessary