Concepts endure not by remaining pure ideas, but by sedimenting into the very infrastructures that later constrain them. The moment a thought becomes operative—when it hardens into a regulation, a database schema, a spatial threshold or a professional protocol—it simultaneously acquires durability and loses part of the plasticity that first made it generative. This double movement is decisive: materialisation grants the concept the power to organise behaviour without the need for continuous argument, yet the same stabilisation binds it to budgets, legal categories, maintenance routines and institutional roles whose interdependence makes revision appear prohibitively costly. What begins as an opening of possibility can therefore become a procedure for closing it, converting exceptions into anomalies and distributing helplessness among those required to operate within the form while remaining unable to alter its architecture.