Product ground truth. You define what "correct" means. Which authorities govern a given issue and posture, how treatment is flagged (followed, distinguished, overruled), what a hearing-ready memo must contain, and where the system must refuse to answer rather than guess. You build and run the evaluation set that we grade retrieval and synthesis against — real issues, real jurisdictions, graded by someone who has actually filed. You are the last line before a citation ships.
