System Collapse in Institutions as Admissibility Boundary Failure

Institutions coordinate collective behaviour across societies, organisations, and governance structures through rules, administrative procedures, and resource management systems. Traditional analyses of institutional collapse often focus on political instability, economic crisis, or organisational failure. This paper interprets institutional collapse through the admissibility framework of the Paton System. Within this interpretation, institutions remain viable only while their operational states remain within admissible structural limits defined by governance rules, information flows, resource constraints, and coordination mechanisms. When these limits are exceeded, system trajectories may move beyond admissible operational regions, producing instability, cascading failures, and institutional breakdown. Institutional collapse therefore represents the failure of admissibility preservation within organisational systems and provides a structural explanation for governance instability across complex institutions.