Back of Mind 2026-04-17-3
The Most Important Number
Dan Davies identifies the number nobody wants to find: how many words of AI output can a manager verify per day before judgment silently degrades? The self-driving car literature already answered this for monitoring tasks; the same vigilance decrement applies to AI output review. Organizations will systematically overestimate their people's verification capacity, and unlike physical exhaustion, cognitive degradation is invisible to the person experiencing it. The binding constraint on AI leverage isn't generation capability; it's human verification throughput, and we're structurally incentivized never to measure it.