 To return to our exposition of the private language concerns found in the Philosophical Investigations, in distinction from Russell’s work, for example, the idea of a private language is more usually hidden: the confusions supposed to belong to it allegedly underlie a range of articulated philosophical notions and theories, without themselves being so articulated. The argument is thus perhaps most profitably read as targeting, not any particular theory, but rather the motivation for considering a range of apparently independent or even competing theories along with their associated tasks, problems and solutions.