Variations of Richard Goodwin's graphical model for explaining the rudiments of Keynes's real/monetary cycle theory are presented that can also be explicated graphically, but which possess more plausible dynamic properties, namely, the generic possibility of irregular, asymmetric fluctuations

In recent years economists have begun to use the techniques of non-linear dynamics to show that some apparently erratic and turbulent economic phenomena reflect subtle underlying patterns. How do cyclic and chaotic dynamics arise in economic models of equilibrium? How can empirical methods be...