As we cannot without a tittle of evidence accept such a consequence, we conclude that Aristotle formulated the distinction between argumentative and adventitious, artificial and inartificial evidences, both in the Rhetoric to Alexander and in the Rhetoric; and that the former as well as the latter is a genuine work of Aristotle, the founder of the logic of rhetoric.
Rhetoric is a faculty on any subject of investigating what may be persuasive (acOavov), which is the work of no other art; its means are artificial and inartificial evidences (7riorecs), and, among artificial evidences, especially the logical arguments of example and enthymeme.
Their narrative is unmethodical and inartificial; their style is tame and plebeian; their conception of biography is that of a collection of anecdotes; they have II.