This proof of concept runs a real Epistemic Learning Object (clinical reasoning — chest pain) through a neuro-symbolic pipeline: an LLM proposes, a deterministic ontology engine adjudicates. Train in the Gym, get certified in the Arena, govern the truth layer in the Studio.
Formative dialogue that reveals hints and coaches your reasoning. No stakes.
The same engine, strict. Defend your reasoning; the engine owns the verdict.
Faculty browse, approve, and annotate the ontology-grounded knowledge base (Axis-B).
Verdict a frozen answer blind, then see the engine's grade + named-rule rationale and rate its soundness.