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Sraffa’s criticisms of the concept of capital also amount – at least in principle –to a deadly blow to the foundations of the so-called ‘neo-classical synthesis’. Combining Keynes’ thesis on the possibility of fighting unemployment by adopting adequate fiscal and monetary policies with the marginalist tradition of simultaneous determination of equilibrium quantities and prices as a method to study any economic problem, this approach has in the last few decades come to constitute the dominant doctrine in textbooks the whole world over. It is only thanks to increasing specialisation in the various fields of economics, often invoked as the inevitable response to otherwise insoluble difficulties, that the theoreticians of general equilibrium are able to construct their models without considering the problem of relations with the real world that economists are supposed to be interpreting, and that the macroeconomists can pretend that their ‘one commodity models’ constitute an acceptable tool for analysis. For those who believe that the true task facing economists, hard as it may be, is to seek to interpret the world they live in, Sraffa’s ‘cultural revolution’ still marks out a path for research that may not have yielded all it was hoped to, but is certainly worth pursuing. (en) |
