The Solvay Horizon: Scale Relativity and the Quantum Illusion of a 10^36-Metre Static Universe

This paper introduces a conceptual thought experiment exploring the relativity of observer scale in cosmological frameworks. We establish a model where the universe dynamically stabilizes its expansion at a radius of 10^36 metres relative to a human baseline (10^0 m). This metric reveals a striking geometric symmetry: the human scale occupies the absolute mathematical midpoint between the macro cosmic horizon (10^36 m) and the microscopic Planck floor (10^-35 m). By scaling the foundational principles of the 1927 Solvay Conference—specifically wave function superposition and instantaneous non-local collapse—we demonstrate that an observer at the 10^36-metre boundary would perceive classical human activity not as localized mechanics, but as a fluid quantum probability wave. The paper utilizes the Born Rule and relational mechanics to argue that quantum paradoxes are not anomalies unique to subatomic matter, but are emergent properties generated by extreme scale differentials between the system and the observer.