 Jones’s argument is similar, but not identical, to Frege’s. She argues that a theory that assimilates all assertion to A is A must fail to account for cases of significant assertion—cases in which we go beyond “pure tautology”. Frege’s argument is more sophisticated, making implicit appeal to a principle of compositionality, and considering alternative theories of the semantic contents of singular terms. Still, both are concerned to correct a similar—perhaps the same—mistake. Indeed, Jones’s and Frege’s interest in identity may derive from a common source, namely Lotze. (See Gabriel 2002 and Heis 2013 for assessments of Lotze’s role in the development of Frege’s thought.)