26/05/2025

[SPFL-UAM] Seminario Permanente de Filosofía de la Lógica UAM

"Are logical laws revisable?"

Yannis Arazam (UM6P, Marrocos)

Segunda-feira, 26 de maio de 2025

A partir das 12:30 (Madrid) / 7:30 (Brasília) na Universidad Autónoma de Madrid

ou online através do link https://forms.office.com/e/QHWJpUgUwT

Organização: Enrique Alonso e Antônio Mesquita

Abstract: The problem of revising logic permeated the philosophy of the major authors of the analytic tradition in the 20th century. From Wittgenstein to Dummett and through Quine, Putnam or Kripke, authors have tackled afresh a problem that has taken various forms throughout the history of philosophy. Developments in mathematical logic following the Fregean revolution, or even the formalization of quantum mechanics, have both renewed and sharpened the problem. Is there any sense in questioning logical laws classically acknowledged since Aristotle? More simply put, is it intelligible to change our logic? For instance, is the intuitionistic refusal of the law of excluded-middle and, more generally, the emergence of "alternative logics" constitutive of a turning point in the history of logic whereby classical logic is refuted? The difficulty faced stems from the constitutive nature of logic for thought: if logical laws are the norms of intelligibility, how can they be challenged without undermining the very possibility of meaning? In our lecture, we aim to trace this difficulty back to the classical analytical corpus, and get new revisionist perspectives out of it by means of the concept of paradigm as a substitute for the concept of rule, alongside logical developments in type theory and category theory.