The article proposes new semantics for the ‘believe’ attitude. It is designed to model the argumentative influence of one agent on another. The main task is to give an interpretation of the hetero-epistemic attitude. The resulting semantics of the attitude “to believe” reduces this attitude to its communicative realization, that is, to action. Along the way, it turns out that to believe something means to assume actional consequences as well. The proposed interpretation of positing puts action in the first place, since it can be verified in the best way, and the agent turns into an accessibility relation. The concept of an action conditional is defined separately. In him, the intensional attitude is localized.