The article is a response to a polemical essay of J. Kay and his critique of macroeconomic modeling. The author shows that models are an indispensable instrument of economic analysis and that the only alternative would be the formulation and estimation of structural relationships between...

The article claims that modern economics is in the state of crisis, because the major macroeconomic theories are in fact based on the concept of rational expectations, and the main method of research is considered to be the model-building with models as "artificial worlds". Therefore it is...