John Kenneth Galbraith

After the war, John Kenneth Galbraith (1908-2006) became one of the standard bearers for pro-active government and liberal-democrat politics. In The Affluent Society (1958), Galbraith argued voters reaching a certain material wealth begin to vote against the common good. He argued that the "conventional wisdom" of the conservative consensus was not enough to solve the problems of social inequality.^[70] In an age of big business, he argued, it is unrealistic to think of markets of the classical kind. They set prices and use advertising to create artificial demand for their own products, distorting people's real preferences. Consumer preferences actually come to reflect those of corporations—a "dependence effect"—and the economy as a whole is geared to irrational goals.^[71] In The New Industrial State Galbraith argued that economic decisions are planned by a private-bureaucracy, a technostructure of experts who manipulate marketing and public relations channels. This hierarchy is self serving, profits are no longer the prime motivator, and even managers are not in control. Because they are the new planners, corporations detest risk, require steady economic and stable markets. They recruit governments to serve their interests with fiscal and monetary policy, for instance adhering to monetarist policies which enrich money-lenders in the City through increases in interest rates. While the goals of an affluent society and complicit government serve the irrational technostructure, public space is simultaneously impoverished. Galbraith paints the picture of stepping from penthouse villas onto unpaved streets, from landscaped gardens to unkempt public parks. In Economics and the Public Purpose (1973) Galbraith advocates a "new socialism" as the solution, nationalising military production and public services such as health care, introducing disciplined salary and price controls to reduce inequality.

Paul Samuelson

In contrast to Galbraith's linguistic style, the post-war economics profession began to synthesise much of Keynes' work with a mathematical representations. Introductory university economics courses began to present economic theory as a unified whole in what is referred to as the neoclassical synthesis. "Positive economics" became the term created to describe certain trends and "laws" of economics that be objectively observed and described in a value free way, separate from "normative economic" evaluations and judgments. The best selling textbook writer of this generation was Paul Samuelson. His Ph.D. was an attempt to show on how mathematical methods could represent a core of testable economic theory. It was published as Foundations of Economic Analysis in 1947. Samuelson started with two assumptions. First, people and firms will act to maximise their self interested goals. Second, markets tend towards an equilibrium of prices, where demand matches supply. He extended the mathematics to describe equilibrating behaviour of economic systems, including that of the then new macroeconomic theory of John Maynard Keynes. Whilst Richard Cantillon had imitated Isaac Newton's mechanical physics of inertia and gravity in competition and the market,^[20] the physiocrats had copied the body's blood system into circular flow of income models, William Jevons had found growth cycles to match the periodicity of sunspots, Samuelson adapted thermodynamics formulae to economic theory. Reasserting economics as a hard science was being done in the United Kingdom also, and one celebrated "discovery", of A. W. Phillips, was of a correlative relationship between inflation and unemployment. The workable policy conclusion that securing full employment could be traded-off against higher inflation. Samuelson incorporated the idea of the Phillips curve into his work. His introductory textbook Economics was influential and widely adopted. It became the most successful economics text ever. Paul Samuelson was awarded the new Nobel Prize in Economics in 1970 for his merging of mathematics and political economy.