GRAVITY AND THE GROUND : Why General Relativity and Quantum Mechanics Cannot Be Unified, and What Is Underneath Both

General relativity and quantum mechanics have resisted unification for a century. This paper argues the incompatibility is not mathematical but structural: each theory correctly describes a different side of the same boundary event, and no formal system operating within either domain can describe the boundary itself. We identify that boundary as the commitment-to-locality event — the moment a quantum system in superposition commits to a definite position in spacetime. We propose that gravity and quantum collapse are not two events in a causal sequence but one event described from two positions simultaneously: what the commitment looks like in spacetime from outside, and what it feels like from inside the instrument undergoing it. This identification implies that the hard problem of consciousness and the quantum measurement problem are the same problem from opposite sides of the same event. The accelerating expansion of the universe is interpreted as the substrate distributing the pressure of increasing commitment-event density. Three falsifiable predictions are derived and distinguished from Penrose's Orchestrated Objective Reduction.