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effect, etc., also persuades. When we inform others, there is an expected outcome. If we
define something, we expect others to accept or reject our definition. If we look at
causes and effects it is to learn something so we will know how to act. Every expository
act informs someone’s decisions and actions and is therefore persuasive. The separation
of persuasion into its own mode of discourse, when all of the modes are fundamentally
persuasive, does not make as much sense as teaching that all genres are persuasive.
The progymnasmata further teach logical topics as applying to all kinds of
discourse, not to a mode called “exposition.” In modern teaching of expository writing,
theorists have taken classical logical topics described by Aristotle, Cicero, and others,
including definition, genus, species, property, similarity, difference, contraries, conflicts,
antecedents, consequences, adjuncts, causes, effects, conjugates, and quality, and have
separated them into kinds of writing. The logical topics, however, apply in any kind of
writing. The topics describe various logical standpoints a writer may take, and writers
and speakers always speak and write from a logical standpoint, irrespective of genre.
Students gain experience with logical topics through the progymnasmata and their
places. The places of the chreia and the proverb, for example, include the cause, the
contrary, analogy, example, and testimony of ancients. The places of the refutation
include the obscure, the unconvincing, the impossible, the inconsistent, the improper, and
the irrational. To write on each of these places, students will have to consider quality of
arguments and evidence, contraries, conflicts, and similarities and dissimilarities between
reality (based on experience and evidence) and the statement being refuted. In addition
to these logical topics, in determining possibility and self-consistency, students may have
to reason concerning antecedents, consequents, adjuncts, causes and effects. The