Within these topics, Aristotle divided modes of argument into two parts: (1) the modes of argument and persuasion that are invented or created by the author--the entechnic pisteis, "artistic" or "artificial," proofs known as logos, pathos, and ethos; (28) and (2) the modes of argument and persuasion that the author does not or cannot invent, but that are discovered or found--the atechnic pisteis or "non-artistic" or "non-artificial" proofs, including facts and data, statistics and reports, documents and contracts, sworn testimony (including expert testimony), interviews, polls, and surveys.
As with the topic of invention, arrangement operates through the two previously mentioned modes of logos-oriented communication and persuasion: the entechnic pisteis (Artistic) Modes and the atechnic pisteis or (Non-Artistic) Modes.
THE ATECHNIC PISTEIS OR (NON-ARTISTIC) MODES OF INVENTION AND ARRANGEMENT OF MATHEMATICS AND SCIENCE
Accordingly, McBryde understands Adela's own story as secondary to his overall argument against Aziz, and he is unable to cull significant parts of Adela's epistemology in order to generate the needed verbal evidence to convict the defendant (using, in Aristotle's terms, "atechnic
" or inartistic proof, or pistis, to do so).