Two recent articles in this journal present conflicting interpretations of the Aggregate Demand/Aggregate Supply (D/Z) model contained in Chapter 3 of Keynes's <italic>General Theory</italic>. This paper evaluates the two interpretations to determine which aligns more closely with Keynes's own views.

<title>Abstract</title>This paper is one of three contributions to a symposium commenting on papers previously published by the other authors. I basically agree with Allain's (2009) reconstruction of Keynes's model of effective demand from Chapter 3 of <italic>The General Theory</italic>, except that I think that entrepreneurs...

This paper endeavours to reinterpret one of the most fundamental concepts of macroeconomics: the Keynesian investment multiplier. The multiplier is not interpreted as a dynamic process (or quantity reaction of output) nor as a logical relation (or ratio) between income and investment...