Cognitive Fusion: Towards a Symbiotic Intelligence Beyond Tools (v1.0.0)

Abstract

This paper proposes "Cognitive Fusion" as a new paradigm for human-AI interaction, aiming to transcend traditional "instrumental" usage models. Within this framework, AI is no longer treated as an external resource but is internalized via structural coupling into the individual's cognitive architecture, forming a "Symbiotic Mental Unit (SMU)." Drawing on an auto-ethnographic study of the author's 14,030 interactions throughout 2025, this paper constructs a Four-Layer Symbiotic Interface Model (Semantic, Contextual, Structural, and Meta-Cognitive). This model elucidates the structural mechanisms required to transition from "high-frequency chat" to "deep co-construction." Furthermore, the paper critically identifies "The Hollow Shell Effect"—a pathological state of pseudo-fusion characterized by high volumetric throughput but low structural tension. The paper concludes that achieving true cognitive extension requires a shift from tactical "Prompt Engineering" to strategic "Cognitive Co-Design." This paradigm not only reconfigures the boundaries of collaboration but also heralds the emergence of a new human form possessed of structural reflexivity—"The New Symbiotic Human." Version v1.0.0 (Zenodo DOI: https://doi.org/10.5281/zenodo.18229200).

Keywords: Cognitive Fusion, Symbiotic Mental Unit (SMU), Auto-ethnography, Four-Layer Interface, The Hollow Shell Effect, Cognitive Co-Design, Human-AI Integration, Cognitive Architecture