Abstract
It is widely thought that people sometimes act as their own worst enemy in that they engage in irrational actions that hinder achievement of their own (sincerely held) aims. It is also widely thought “aims-irrationality” of this kind is something for which people can be held morally responsible and blamed. It is here argued that, given a certain plausible picture of human agent architecture, we must reject the second claim. An epistemic regress argument is put forward in which aims-irrational actions are necessarily accompanied by a certain serious form of ignorance, and, furthermore, this ignorance cannot be something for which the person is culpable. It follows from this argument that no person can ever be morally responsible for steering their agency in an aims-irrational direction. The argument is not merely “philosophical”; it has significant real-world implications. It underscores that people overattribute moral responsibility, and it offers theorists a new vantage point to inquire into the factors at work in producing irrationality.