How the Rejection of Incompatible Speech Acts Transforms Human Cognition

Abstract Engaging with the literature on transformative conceptions of rationality, I argue for the following position on the way reason transforms human cognition: when the capacity for knowing that one ought to do something is directed at one's own speech acts, an initially domain‐specific and practical grasp of genus/species relations – manifest in the ability to select among the various permitted ways to do as one judges one ought – becomes a mechanism through which the reflective study of genus/species relations hones the domain‐general classificatory abilities that accompany adult human language use. In this fashion, our instinctive behaviors may be transformed: we might cease to respond to events simply as (e.g.) fearful or enraging , recognize these motivations as cases of cowardice and recklessness , and begin to treat them as opportunities for courage and restraint .