Herbert Simon's studies on organization theory led him to the conclusion that the use of objective reason in decision-making presupposes the existence of an (also) objective panorama, which is not commonly verified, due to the various interferences, internal and external to the person who decides, as is the case of magistrates in the Brazilian Judiciary. Entitled “bounded rationality”, the theory was applied in this study in a qualitative analysis of an empirical nature on semi-structured interviews carried out with judges from the North of Minas Gerais, aiming to indicate factors limiting rationality. Some considerations that could be made in relation to the research refer mainly to the use of values and beliefs for judgment, with significant changes in the decision-making individuals and the organization they represent, as well as the tendency to use computerized systems to automate decision-making, such as databases and artificial intelligence. The contribution of this paper regards the elaboration of public policies and the understanding of the work of legal judges, who, considering the hierarchy of the Brazilian Judiciary, are clear decision makers.