 As regards the division of logic, which is more precisely a division of syllogistic reasoning, Simon’s commentary is noteworthy in one regard: following in the footsteps of Giles of Rome, Simon considers rhetoric and poetics to be parts of logic, i.e., to function by way of syllogisms. A syllogistic argument is divided based on the varying degrees of certainty of its premises (In Isag.: prologue). It is also remarkable that, in his commentary on the Sophistical Refutations, Simon includes the alethic modality of the conclusion as a further criterion for the division of syllogistic reasoning (In SE: prologue). Hence, if the starting point of reasoning is a mere suspicion  (suspicio),[5]  the syllogistic reasoning is rhetorical and the conclusion will also be a suspicion (such reasoning is dealt with in the Rhetoric). If it “proceeds from fictitious elements that portray horror or pleasure” (In Isag.: prologue), the reasoning is poetic and the conclusion will be an estimation (aestimatio) (such reasoning is dealt with in the Poetics). If it proceeds from probable knowledge, the reasoning is dialectical and the conclusion will be an opinion or belief (such reasoning is dealt with in the Topics). If it proceeds from the knowledge of essential causes and proper attributes, the reasoning is demonstrative and the conclusion will be certain and infallible knowledge (such reasoning is dealt with in the Posterior Analytics). Finally, if it proceeds from knowledge that seems to be true, but is not, the reasoning is sophistical and the conclusion will be an error (deceptio) (such reasoning is dealt with in the Sophistical Refutations).