Integration^2 - A Mechanistic Theory of Phenomenal Consciousness

Several theories propose that consciousness involves recursive self-reference, but none provides a complete mechanistic account: what specifically loops, why the looping apparatus exists, and what determines the character of the resulting experience. This paper presents Integration² (I²), a theory of phenomenal consciousness built on a single mechanism: integration products, broadcast to downstream processes, re-enter the integration process as inputs. This recursive loop, we argue, is phenomenal consciousness; not a correlate of it and not a process that produces it as a separate output. The hard problem of consciousness is thereby dissolved: asking why the loop "feels like something" is asking why integration-accessing-its-own-products is integration-accessing-its-own-products. I² makes two claims that distinguish it from existing recursive theories. First, the loop is not a purpose-built feature but an inevitable consequence of two independently necessary capacities: integration (to solve the binding problem) and broadcast (to make integration products available to downstream systems, including the integration process itself). Second, a two-factor model explains both the threshold and the gradient of consciousness: the loop must exist (factor one), and the richness of experience depends on the sophistication of the downstream processing the signal passes through before re-entry (factor two). This second factor yields a topological distance framework that accounts for the nondual-dual gradient in contemplative and pharmacological altered states. The framework also unifies Block's (1995) tripartite distinction: access, phenomenal, and self-consciousness emerge as three orders of the same integrative process rather than three kinds requiring separate explanation. The theory generates falsifiable predictions distinguishable from those of Global Workspace Theory, Integrated Information Theory, and Higher-Order Thought theories.