The Boundary Conditions of Vacuum Stiffness and the Limits of Geometry

This paper is archived as a speculative research work. Black holes occupy a unique and persistent position in fundamental physics, simultaneously con-firming General Relativity while exposing its conceptual limits. Traditional treatments regard blackholes as objects with interiors governed by unknown physics, leading to singularities, informationparadoxes, and unresolved questions about quantum gravity. In this work, we show that these prob-lems arise from a misplaced assumption: that gravity is a dynamical interaction operating withina spacetime interior. Building on the identification of the Higgs field as a scalar vacuum-stiffnessassignment and General Relativity as its geometric bookkeeping, we reinterpret black holes as satu-ration boundaries of vacuum stiffness. The event horizon marks the limit at which admissible causaland geometric representation fails, not the presence of hidden interior structure. The black-hole in-terior is therefore undefined rather than singular, and all physically meaningful information is fullyencoded in the exterior stiffness assignment. This reinterpretation resolves long-standing puzzlesconcerning singularities, unitarity, holography, Hawking radiation, and rotation without modifyingGeneral Relativity or introducing new degrees of freedom. Black holes emerge as probes of thecausal limits imposed by the underlying kernel of admissibility, not as sites of exotic new physics.