This article analyzes the rational and irrational classification of contextual argumentation from a philosophical and theoretical perspective. The study includes a number of fundamental concepts that represent the levels of reflection of reality by the human mind, among which the special status of “truth” and “belief” is revealed. In this, the main factors for understanding the mechanism of influence of contextual arguments on the human mind by clarifying the differences between “truth” and “belief” are formally highlighted. In the framework of this article, the knowledge operator 𝐾𝐾𝑎𝑎𝑝𝑝 is used in epistemic logic, and the belief or belief operator 𝐵𝐵𝑎𝑎𝑝𝑝 is used in doxastic logic. Unlike classical knowledge logic (epistemic logic), doxastic logic is a special axiomatic system adapted to express the beliefs and convictions of subjects. This article interprets the KD45 system and the reflexive attitude of the agent to his own states of belief and distrust.