Angus Deaton, 69, a Princeton University econometrician theorist and measurement economist, has been awarded the 2015 Nobel Prize in economic sciences for forty years of work on consumer behavior, concentrating in later years on well-being among the poor in the developing world. His 1980 treatise, Economics and Consumer Behavior (Oxford), with John Muellbauer, of Oxford University, the source of their “Almost Ideal Demand System” of equations, is occasionally compared in its generality by enthusiasts of consumption theory to Adam Smith’s An Inquiry into the Nature and Causes of the Wealth of Nations The prize to Deaton should have come as…