We argue that when externalities such as pollution are nonexcludable, agents must be compelled to participate in a “mechanism” to ensure a Pareto-efficient outcome. We survey some of the main findings of the mechanism-design (implementation-theory) literature – such as the Nash...

"The foundations of incomplete contracts have been questioned using or extending the subgame perfect implementation approach of Moore and Repullo (1988). We consider the robustness of subgame perfect implementation to the introduction of small amounts of asymmetric information. We show that...