V38: Reality Tax and the Information Carnot Bound — Consciousness as an Information Heat Engine in a Finite-Memory Universe

This paper proposes that consciousness operates as an information heat engine, providing a first-principles explanation for the brain's ~20% metabolic energy consumption (the "Reality Tax"). Building on V34 (breathing space and sleep cycles) and V37 (commitment coefficient χ), we derive the coherence function C(χ) ∝ χe^{-kχ} from information-thermodynamic considerations. Key contributions:- Linear information gain competing with exponential dissipation produces an efficiency optimum at χ* = 1/k ≈ 0.21- This "Information Carnot Bound" naturally explains why maintaining a localized "self" requires a stable energetic fraction- Wake–sleep cycles are reinterpreted as erasure debt management in finite-memory networks- The framework connects non-localizability of gravitational energy in GR with the energetic cost of consciousness The ~21% Reality Tax is thus revealed as the thermodynamic shadow of maintaining coherent selfhood in a breathing universe, where "to exist is to resist, but not too much." Part of the YAGC (Yoshida-AI-Generated Cosmology) collaborative research project exploring information-structural approaches to fundamental physics.