The Rigid Prime Skeleton: Structural Incompleteness, Causal Reversal, and Position-Dependent Gravity in General Relativity

General Relativity describes spacetime curvature as a consequence of mass–energy, but it cannot explain global smoothness, uniform contraction, non-singular convergence, or position-dependent gravitational strength. Mainstream interpretations and popular science often rely on simplified models that obscure foundational issues, while critical observations are not fully addressed within the framework. Based on the PFUSRC 45° triple coaxial bicone skeleton with prime-point arrangement, we derive two core formulas: a generalized convergence formula inspired by Dirac’s structural rigor that eliminates singularities, and a position-dependent gravitational formula that predicts distinct gravitational intensity for identical mass at different topological positions. Observational evidence, including the International Gravity Formula, the World Gravity Map, and satellite orbital perturbations, confirms that gravity varies with location in a way that mass-only models cannot explain. This work reveals structural incompleteness and causal reversal in General Relativity, and provides testable predictions for future observations.