This preprint is part of the Lantern of Sulfur (LoS), Vertical Terrain Axis — Convergence Series. This paper uses microgravity as an external model of incomplete physiological resolution. It argues that biological regulation may remain active while resolution fails when timing, direction, sensing, response, and execution no longer align. The paper frames hyperchloremia as the primary measurable terrain signal in the Convergence Series, while microgravity serves as a high-legibility comparison model for directional loss. In microgravity, circadian timing and regulation may persist, but gravitational direction is altered, producing distorted sensing, mismatched autonomic and renal-electrolyte responses, fluid redistribution, pressure-flow imbalance, and incomplete physiological resolution. The paper also extends this convergence pattern to traumatic brain injury-related hypothalamic or posterior pituitary dysregulation. Under this model, central interpretation of osmotic, pressure, thirst, vasopressin/ADH, and volume status may become distorted, causing downstream renal-electrolyte execution to follow a false-but-actionable command. Hyperchloremia, chloride-dominant acid-base terrain, NAGMA tendency, paradoxical dehydration, and unstable pressure-flow behavior may therefore represent measurable endpoints of upstream command mismatch rather than primary kidney failure alone. Within the Lantern of Sulfur framework, Directional Pressure Failure (DPF) names the shared failure geometry: regulation continues, fluid and pressure organize into maladaptive compartments, and the system does not return cleanly to coherence. This work is presented as a conceptual systems-physiology model intended to generate testable hypotheses and improve clinical pattern recognition. It is not a treatment protocol, clinical guideline, or substitute for individualized medical care. For the complete Lantern of Sulfur framework, reading order, and updated convergence dynamics materials, see the Lantern of Sulfur Master Index (Concept DOI): https://doi.org/10.5281/zenodo.17915492
Beth Ann Martell (Tue,) studied this question.