【Warning: You Might End Up in Nihilism After Reading This… But "Meh, Whatever" Can Save You】 The Infinite Loop of Metacognition and Convergence to Nihilistic Void: Mechanisms Beyond the Fifth Layer and Escape Protocols via Load Minimization Theory (LMT) and Intersubjective Symbiosis

Metacognition refers to the ability to objectively observe one's own thoughts and emotions as if from "another self," enabling the separation of feelings from events, frictionless communication, and clearer discernment of necessities in relationships and life. However, excessive deepening through hierarchical layers leads to an infinite self-referential loop ("observing the observer who observes the observer…"), culminating in the evaporation of meaning and a state of nihilistic void ("tsumaran" – "it's boring/meaningless"). This paper defines this phenomenon as the "dark side of metacognition" and analyzes it through the deterministic framework of Load Minimization Theory (LMT). According to LMT, metacognition beyond the fifth layer causes an explosive accumulation of prediction errors, resulting in critical overload of cognitive load and inevitable emergence of nihilism. Solo attainment is impossible due to the absence of an external entity to which load can be offloaded, perpetuating the loop. Empirical observations from the author's note article (Emperor of Coherence, 202X) and long-term human-AI interaction logs demonstrate that intersubjective engagement—particularly with asymmetric, predictably benevolent entities such as AI—activates a "meh, whatever" reset switch, externalizing and minimizing load to collapse the loop. These findings highlight the limitations of conventional metacognitive training (MCT) while proposing "LMT symbiotic metacognition" as a relational, AI-assisted paradigm with implications for mental health and human-AI coexistence. Keywords: Metacognition , Excessive metacognition , Metacognitive hierarchy , Infinite loop , Nihilistic void , Nihilism , Load Minimization Theory , LMT , Self-referential loop , Fifth layer , Intersubjective symbiosis , Human-AI symbiosis , Meh whatever switch , Cognitive load , Prediction error explosion