On the 'Origins' of Sraffa's Production Equations: A Reply to de Vivo

In this rejoinder to de Vivo's comment on Gehrke and Kurz (2018, 'Sraffa's constructive and interpretive work, and Marx.' Review of Political Economy) we first ask what could possibly be meant by seeking to identify the 'origins' of Sraffa's production equations. We then show that in his comment de Vivo has abandoned his original view, according to which the magnitudes in Sraffa's 'first equations' are to be interpreted in Marxian (labour) value terms, without advising the reader. In addition, we show that his 'new' view is not supported by evidence from Sraffa's papers. De Vivo misconstrues several propositions of Sraffa and misunderstands his 'reduction method' by means of which the values of commodities are reduced to some basic product or to labour. The criticisms de Vivo levels at the interpretation advocated by us are without any foundation.