Should a benevolent government provide public goods if it cannot commit?
比较了仁慈政府有限承诺下的集中供给与基于自愿贡献的分散供给两种二元公共品提供机制，发现分散系统可能表现更优。
Abstract I compare two different systems of provision of binary public goods: a centralized system, operated by a benevolent government that has limited commitment power; and a decentralized system, based on voluntary contributions, where agents can communicate but cannot write contracts. I show that any ex‐post individually rational allocation that is implementable by the centralized system is also implementable by the decentralized system. This suggests that when the public good provision problem is merely an informational one, as is the case with binary public goods, a decentralized system may perform better.