Structural Stability as a Universal Measure of System Viability

This paper presents a universal framework for evaluating structural stability as a measure of system viability across domains. Rather than introducing new physical mechanisms, it provides a non-interfering interpretive layer applied to the outputs of existing theories. Any system that produces structure—whether in electromagnetic propagation, quantum evolution, or particle interactions—can be assessed in terms of how stable that structure is and how close it is to breakdown. By establishing a continuous notion of distance to instability, this approach offers a consistent way to evaluate structural robustness without modifying underlying domain-specific models such as Maxwell’s equations, Schrödinger’s equation, or quantum chromodynamics.