Dynamical Structuralism and the LIN System: A Boundary-Based Framework for Detecting and Governing State Transitions

A system’s observable performance can remain stable while the structural conditions that sustain it are already changing. This paper introduces Dynamical Structuralism (DS), whose central proposition is:Consequential structural change can precede visible failure.Rather than treating visible failure as the primary event, DS asks when a system’s underlying structure begins to change, and when that change becomes detectable. Detection alone, however, does not determine intervention — a system may enter a detectable transition while continued operation remains acceptable. This shifts the question from observation to governance: at what point should a transition no longer proceed under the system’s own authority? The LIN System is introduced as the architectural counterpart to DS, governing transitions that alter execution authority, reachability, or reversibility. Together they establish two distinct boundaries — a Detection Boundary, beyond which structural change becomes meaningfully detectable, and an Authority Boundary, beyond which a transition requires authorization external to the system.