The Inward Closure Hypothesis: Experience as a World Held from Within

Experience is not a picture in the mind, but a world operating from within. This paper develops the Inward Closure Hypothesis, a structural account of conscious experience. It argues that experience should not be understood as raw information entering awareness, nor as an internal model presented to a separate observer. Rather, experience is the inward mode of a self-maintaining world-model when that model achieves maximal current-case closure. A model reaches current-case closure when it includes the bounded system itself within the modeled field, indexes contents to that system’s perspective, discriminates what alters the system’s accessible continuation, integrates perception, body, memory, action, and possible futures, recursively governs its own correction, and functions as the system’s operative reality without requiring an external or inner recipient. The strongest result is an explanatory exhaustion result, not an unconditional metaphysical proof. The paper argues that once maximal current-case closure is in place, no further causally explanatory stage remains between the closed field and experience. Any proposed additional stage either becomes part of the closure, generates regress, or is causally and explanatorily idle. The remaining metaphysical choice is therefore made explicit: either accept constitutive identity between experience and inwardly operating current-case closure, or add a causally idle phenomenal primitive. The paper also develops implicit futurity, model-mediated future-orientation, subject individuation through maximal closure, qualitative character as total embodied role, closure-zombie underdetermination, inward-outward conceptual asymmetry, and a provisional empirical and computational research scaffold.