Solarium: A Structural Pre-Audit Protocol for Language Acquisition Scalability

Abstract Solarium defines a one-off, non-instructional audit protocol for diagnosing skill-scaling failures in human learning systems (e.g., language proficiency, exam performance, or professional skill acquisition). The protocol does not teach, coach, prescribe plans, or provide behavioral guidance. Its sole function is to identify whether a learner’s current system is structurally capable of scaling beyond a defined threshold, and to classify failure modes when it is not. Solarium outputs a structural verdict (e.g., “pre-threshold / post-threshold,” “scalable / non-scalable,” “bottleneck location,” “irreversible plateau indicators”) based on client-provided artifacts (test outputs, writing samples, transcripts, or documented learning workflows). The audit is point-in-time and informational: it makes no performance guarantees, has no update obligation, and establishes no ongoing advisory relationship. This Zenodo record serves as the canonical reference for the definition, scope boundaries, and output format of the Solarium Structural Pre-Audit Protocol (v1.0). Keywords: structural audit; learning systems; skill scaling; plateau diagnosis; non-instructional; point-in-time analysis; irreversibility; error taxonomy; English learning audit; TOEIC; IELTS