Socioplastics becomes operational precisely at this point: where legibility is not an aesthetic state but an infrastructural practice of making relations readable, citable, testable and returnable. Its transdisciplinary force lies in converting urban symptoms, archival traces, digital objects, platform outputs, displacement pressures and material evidence into a shared field of interpretation. Here SemanticHardening becomes the decisive Socioplastics operator: it names the process through which a diagnostic term gains durability by repeated use, citation, indexing and public circulation, until it can resist institutional vagueness, algorithmic drift and weak conceptual capture. The system does not merely store concepts; it hardens them into operators capable of travelling between art, urbanism, STS, environmental thought, infrastructure, media and political economy. Diagnostic legibility gives Socioplastics the capacity to read not only what appears, but what must be structurally produced for appearance to occur.