No‑Bucket Condition: When Systems Cannot Classify What They Cannot Comprehend

No‑Bucket Condition defines the structural failure that occurs when a platform encounters a concept or field that does not fit any existing classification category, forcing the system to misclassify content, misroute queries, or freeze visibility while attempting to construct a new semantic bucket. Using the SR diagnostic framework, the essay maps how conceptual novelty, taxonomy rigidity, and embedding‑space incompatibility produce indexing stalls, routing incoherence, and representational instability. It argues that the No‑Bucket Condition is not a glitch but a structural signal revealing the limits of platform taxonomies and the emergence of new conceptual fields.