GrammaticalThreshold belongs to Wittgenstein because meaning is secured through use, recurrence, rule and form of life rather than through isolated definition. In Socioplastics, a vocabulary becomes a grammar when its operators begin to generate autonomous relations among themselves. The field crosses this threshold when terms no longer require constant explanation: they act, call one another, stabilise expectations and produce internal necessity. GrammaticalThreshold marks the passage from a list of concepts to a living language-system. It is the moment when the corpus begins to read itself. Its companion is CamelTagInfrastructure, which gives this grammar stable names and machine-readable continuity. The operator draws on Wittgenstein’s Philosophical Investigations (1953), and is extended through Lloveras’ Socioplastics Project Index (2026), https://antolloveras.blogspot.com/p/socioplastics-project-index.html.