Modelling science as a contribution good
将科学从传统公共物品重新建模为贡献品，指出科学博弈从囚徒困境转向纯协调，关注点从搭便车问题转向临界质量问题，为科学经济学和公共政策提供新分析框架。
The non-rivalness of scientific knowledge has traditionally underpinned its status as a public good. In contrast we model science as a contribution game in which spillovers differentially benefit contributors over non-contributors. This turns the game of science from a prisoner's dilemma into a game of ‘pure coordination’, and from a ‘public good’ into a ‘contribution good’. It redirects attention from the ‘free riding’ problem to the ‘critical mass’ problem. The ‘contribution good’ specification suggests several areas for further research in the new economics of science and provides a modified analytical framework for approaching public policy.