When Choice Collapses

This paper introduces a formal constraint-first framework for identifying conditions under which decision-making collapses due to irreversible harm. The work presents a fully specified internal method for distinguishing reversible from non-reversible system transitions and for adjudicating action when future state space has been permanently reduced. Rather than treating ethics, consent, risk, or optimization as primary variables, the framework treats irreversibility as the governing boundary condition. The analysis is developed using a minimal formal structure and applied to irreversible medical interventions to demonstrate how apparent choices persist in discourse after structural choice has already vanished. The paper shows why, beyond certain thresholds, deliberation no longer corresponds to control and why continued option-offering functions as narrative rather than decision. The framework is domain-agnostic and applies to any system in which actions can trigger one-way transitions. Explicit limits and failure conditions are included to prevent overextension. This work is intended as an adjudication reference for systems operating near irreversible boundaries, not as a policy proposal or prescriptive guide. irreversible harm decision collapse constraint-first analysis adjudication non-decision states system boundaries Safety Science Systems Engineering Decision Theory