Narrow Results

The most important insight of Yew-Kwang Ng as a scholar is the single idea that welfare dictates humanity and the other sentient beings as well. This idea serves as the unifying principle that runs through the lion’s share of significant contributions by Ng, as an outstanding defender and an innovative modern theorist of utilitarianism, to a good number of literatures in economics and beyond.

Argenziano and Gilboa (2019) obtain a very important result “that consumer choice data alone are sufficient … [to] provide a microfoundation for a weighted utilitarian social welfare function that reflects common moral intuitions about interpersonal comparisons of utilities”. This paper compares this result with my 1975 Review of Economic Studies paper and examines the sense in which consumer data alone are sufficient. A way to dispense with interpersonal comparisons of utility in specific issues by following efficiency supremacy is also discussed. The suspicion of interpersonal comparison and utilitarianism may be based on misunderstandings.