Human cognition is soft. It is too flexible, too rich and too open-ended to be captured by hard (precise, exceptionless) rules of the sort that can constitute a computer programme. In Connectionism and the Philosophy of Psychology, Horgan and Tienson articulate and defend a new view of cognition. In place of the classical paradigm that takes the mind to be a computer (or a group of linked computers), they propose that the mind is best understood as...