Innovation policy often focuses on the incentives of firms that sell new products. But optimal use of healthcare products also requires good information about the likely effects of products in different patients, and it is hard to provide the right incentives for producers to develop and...

The "tragedy of the commons" metaphor helps explain why people overuse shared resources. However, the recent proliferation of intellectual property rights in biomedical research suggests a different tragedy, an "anticommons" in which people underuse scarce resources because too many owners can...