 We should, however, note that Wittgenstein himself never employs the phrase ‘private language argument’. And a few commentators (e.g., Baker 1998, Canfield 2001 pp. 377–9, Stroud 2000 p. 69) have questioned the very existence in the relevant passages of a unified structure properly identifiable as a sustained argument. This suggestion, however, depends for its plausibility on a tendentiously narrow notion of argument—roughly, as a kind of proof, with identifiable premisses and a firm conclusion, rather than the more general sense which would include the exposure of a confusion through a variety of reasoned twists and turns, of qualifications, weighings-up and re-thinkings—and is a reaction against some drastic and artificial reconstructions of the text by earlier writers. Nevertheless, there is a point to be made, and the summary above conceals, as we shall see, a very intricate discussion.