Economics as a compartmental system: a simple macroeconomic example.

The application in Economics of methods and tools originally thought for other disciplines is not new. In this paper we show how the compartmental approach, typical of Biology, Medicine, Chemistry, etc., can be used as a tool to represent the heterogeneity of the agents and introduce it into the dynamic models. We also show that in some cases the subdivision of the agents into compartments can be useful for the government in order to obtain some results more efficiently.