José da Mata (SBL, Brazilian Society of Logic) delivered a presentation titled "Modality and Time in Aristotle"

On November 26, the 106th session of the Formal Philosophy research seminar was held.

Abstract

The presentation will focus on Aristotle's concept of time, its fundamental modal characteristics, and the philosophical-logical consequences that follow. This concept is essential for understanding Aristotelian semantics, which does not admit contradictions—unlike systems that do. The talk primarily examines the ninth chapter of On Interpretation, as well as the thirteenth chapter of the same treatise.

Of particular interest is the fatalistic argument. Aristotle not only refutes it but also borrows from it the structure of the "two-handed proposition" (and not only that). This structure allows for the expression of contradiction and plays a significant role in modal logic. Incidentally, it is worth remembering Professor Bazhanov’s words about Vasiliev: "In Vasiliev’s theses, certain structures could be interpreted as modal judgments…"