the selfish desire to increase "max-
imally" his own welfare; using this assumption, he was able to express
economic principles in mathematics. This view-and the mathematical
-
approach that followed from it-is "more or less intact" in contempo-
rary economics and has been little questioned; nevertheless, claims
Sen, it is mistaken.
Edgeworth's economic model, which held that individual self-
interest would lead to market equilibrium (the point at which no
person's...