Short form
Paper 33 — General Relativity and Quantum Mechanics Unified
An event horizon speaks three quantum languages to the classical interior it contains. The Interior Observer (IO) framework models the observable universe as the interior of a Schwarzschild black hole. Across 32 papers, it derives or scopes the base thermal scale, dark energy density, baryon fraction, three BBN abundances (χ² = 1.13), the spectral index, the scalar amplitude, and the gravitational slip — all with explicit claim labels and no downstream retuning. This paper reveals the organizing principle: the boundary-to-bulk crossings fall into three channels. Channel 1 (Geometric) is always on — the boundary's gauge algebra permanently imprints on bulk geometry. Channel 2 (Thermal) is state-gated — processes in thermal equilibrium with the Hawking/KMS boundary state receive geometric dressing. Channel 3 (Fermionic) is density-gated — at Planck density, boundary spinor data sources the bulk spin fluid that drives the torsion bounce, with R_eq/R_bounce = 1.00016 from representation theory alone. Includes: a geometric dark-matter alternative (predicting continued null results from direct detection), a conditional no-go for quantum gravity signatures in the muon g−2, and the Holographic Selection Rule governing which observables see the boundary and which do not. Interactive bridge map: https://dfife.github.io/bridge-map.html