The Principle of Intrasystemic Ontological Undecid

This work proposes a philosophical principle according to which the ontological status of reality cannot be proven or refuted from within the system that contains the observer. The argument proceeds from the closure of perception, thought, and language, through Gödelian incompleteness and Cantorian paradox, to the formulation of a structural limit: any statement about reality, simulation, or the system itself remains internal to that system. The text also addresses the self-applicability of the principle, the possibility of a future exit from the system, and the unfalsifiability shared by all internal ontological theories. The conclusion is not that reality is an illusion, but that the question itself is structurally undecidable from the observer's position.