Quantitative oriented economics up to this point has described the behavior of economic agents and the development of the economy as a process by means of models. Quantitative models presuppose deterministic behavior. The results must be reproducible. In order to preserve such scientific accuracy, economics chose homo economicus to represent human behavioral patterns. This assumption has since been refuted in numerous experiments. In the following chapter we want to ask to what extent the quantitative economics can grasp the economic reality and thus come to the right conclusions.