The paper tries to clarify the status of the market in Social Choice and Individual Values. It shows how Arrow at first intended to propose a third theorem of welfare economics (Feldman [1991]), which would show that the market achieves not only Pareto-optimality, but also equitable social...

The article focuses on the North vsWilliamson debate over institutions’ efficiency. It emphasizes a paradox that stems from the fact that both authors share a common set of explanatory concepts but at the same time conclude diversely on institutions’ efficiency. This paradox can be released...