ABSTRACT
This paper has two main objectives. The first one is a full characterization of the neoclassical concept of rationality, showing its constitutive attributes. The second is the presentation of alternative research programs in microeconomics that differ from the neoclassical one because they contradict one or more of these attributes. Besides, it intends to show that microeconomics is today an open field of research and not the field of neoclassical theory. By the way, microeconomics is defined as the science of decision processes in complex systems like organizations and markets.
KEYWORDS:
History of economic thought; complexity