**Fig. 4**. Potential changes in the underlying conditions resulting from different manifestations of the dynamic model. The upper graph gives the equilibrium conditions for each of the “conditions,” which are the consequences of the parameters in the function Q. Each of the lower graphs illustrates the dynamics that result in the particular equilibrium conditions. In the first row of five graphs, each graph is a return map, which is to say the production at time t+4 on the ordinate and the production at time t on the abscissa, plus, below each diagram, exemplary time series (arbitrarily either one or two exemplary time series) generated from the particular form of the generalized function shown in the associated return map above it. For the time series (the lower row of graphs) the abscissa is time and the ordinate is either total production or unit price of product.