Donnellan argues that Russell and Strawson's theories of definite descriptions fail to account for the dual functions that definite descriptions can serve. Descriptions can be used attributively, to state something about whoever or whatever fits the description, or referentially, to enable the audience to pick out a specific person or thing that the speaker wants to talk about. Russell's theory only accounts for the attributive use, while Strawson's theory accommodates the referential use but fails when nothing fits the description. The key difference is that in a referential use, the speaker can successfully refer to something even if the description does not correctly apply, while Russell and Strawson assume the truth is affected if nothing fits the description. According to