PlasticScale is not a tool of evaluation but a structural ontology. It proposes that cultural authority emerges through subtraction rather than accumulation, displacing visibility, scale, and institutional endorsement as primary markers of value. Within the Socioplastics framework, a work’s systemic force is governed by an inverse proportionality: the lower its institutional inertia, the higher its jurisprudential capacity. Authority is not secured through permanence or prestige, but through metabolic efficiency. The formula IE = (C × T) / W formalises this inversion. Circulatory Reach and Temporal Durability amplify one another multiplicatively, while Weight—defined as institutional and material drag—attenuates both.