But Who Will Monitor the Monitor?
研究了在战略环境中如何设计契约，使监督者既有动力去发现他人的偏离，又能自我约束，即使其观察是私密且有成本的。
Suppose that providing incentives for a group of individuals in a strategic context requires a monitor to detect their deviations. What about the monitor's deviations? To address this question, I propose a contract that makes the monitor responsible for monitoring, and thereby provides incentives even when the monitor's observations are not only private, but costly, too. I also characterize exactly when such a contract can provide monitors with the right incentives to perform. In doing so, I emphasize virtual enforcement and suggest its implications for the theory of repeated games.