From simulation model to public policy

Abstract

Forrester's model is described and critically analyz ed with a view to understanding the relationship between his conclusions and his normative scheme. He claims that his model produces "counterintuitive" results; it is argued here that the main results follow directly from his goals. An alternative method of evaluating the results of the model is pro posed, based upon the model's calculation of the city's attractiveness for various groups. This alternative normative scheme leads to quite different conclusions from those reached by Forrester.