Reasoning and necessary truths

Authors

  • Raúl E. Rodríguez Monsiváis. Universidad de Guadalajara

Keywords:

Necessary propositions, Reasoning, A priori knowledge, Analytic philosophy

Abstract

This article examines the epistemological problem of how we access, justify, and believe true and necessary propositions, focusing on the distinctions between a priori and a posteriori knowledge, as well as between necessity and contingency. The author critically revisits Kant’s distinctions between analytic and synthetic judgments and engages with contemporary analytic philosophy, particularly Saul A. Kripke’s theses on necessary a posteriori truths and contingent a priori knowledge. The study challenges the intuitive view of reason as a faculty that directly “intuits” truth and necessity. Instead, it proposes an operational conception of reasoning, inspired by Jean Piaget’s genetic epistemology, according to which reason functions through reversible symbolic operations that allow for the conservation of identities, the establishment of relations, and the justification of necessary propositions. The article argues that necessity is not an immediately given property, but rather the result of intellectual operations such as classification, definition, class exclusion, and the conservation of totalities. The study concludes that knowledge of necessary propositions can be rationally justified independently of experience, provided that reason is understood as an operational system grounding necessity and truth.

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Published

2026-01-14

How to Cite

Rodríguez Monsiváis., R. E. (2026). Reasoning and necessary truths. Sincronía, 27(63), 1–22. Retrieved from https://revistasincronia.cucsh.udg.mx/index.php/sincronia/article/view/998

Issue

Section

PHILOSOPHY