On Some Slippery Slopes: Horizontalists, Structuralists and Diagrams

Since Basil Moore published Horizontalists and Verticalists in 1988, there have been numerous attempts to model an endogenous money supply within a graphical framework which would also facilitate discussion of some of the controversial issues surrounding it. These have not generally been very successful until Fontana’s recent (2003, 2006) adoption of a pure flow of funds framework. More recently, the ‘New Keynesian consensus’ in macroeconomics has finally forced a rejection of the exogenous money paradigm and the LM part of the familiar IS/LM/AS model. In this paper we show how, with some modification, Fontana’s approach can be combined with ‘mainstream’ replacements of IS/LM (Carlin and Soskice, 2006; Bofinger, Mayer and Wollmerhäuser, 2006) to produce a model of the monetary sector which illustrates both the current wisdom about monetary policy (e.g. Woodford, 2003) and the post-Keynesian insights that have been developed over the last twenty years.