Commitment refers to a decision/action process. In this light, the works on commitment can be linked to those on decision. Since March and Simon (1964) and Simon (1983), we have known that the rationality of decisions is bounded. It is bounded by the individual’s cognitive biases, and lack or absence of useful skills, habits or even values. Giddens (1984a) also underlines the limitations in the actors’ competence: according to him, the structured properties of social systems extend over space and time way beyond the control that the actor may exercise. Unintended consequences constitute, therefore, along with the subconscious, one of the main limits of the social actor’s competence. Unwanted consequences constantly arise from the course of action pursued and, retroactively, may subconsciously condition future actions. This is an essential aspect that should be considered in the works on commitment.