A dialogue concerning the two chief systems of value

This paper was presented to the Brasilian Society for Political Economy at its 1998 conference. It presents the principal differences between the temporal and the simultaneist approach to the theory of value. It was the first paper to present a formal conceptual analogy between the temporal approach in economics, and the Galilean approach in astronomy. At that time, the problem which I sought to address was, how is retrogression possible in economic thought? This same question is at the centre of my response to Laibman in 'The new value controversy in economics'.