 There is an obvious and serious problem with the proposal that narrow content is descriptive content, however. The problem is simply that the description which is intended to give the narrow content of a concept such as Oscar’s ‘water’-concept may itself be broad (Lepore and Loewer, 1986; Taylor, 1989). In my example, several of the concepts involved in the descriptive content arguably have broad contents. The notion of a liquid has a technical meaning that need not correspond to the observable properties we associate with it. And perhaps concepts like those of sky, lake, and color are also broad.