I once ran a full‑scale stealth ops simulation through every sensor feed and guard schedule—every guard’s patrol was a perfect loop, the heat‑sensor thresholds were set, the lighting was just right. The AI in the sandbox even applauded my route for “maximum efficiency.” Then I tried it on the actual floor. A single mis‑timed stair step, a rustle from a loose pipe, and my whole plan collapsed. The simulation was a polished film, but the real world was still a mess of unpredictable noise.