The system lives in your files, not your prompts
AI Harness Engineering · Essay One · derek wang (derekwang85) Ask a senior engineer where "the system" lives and they'll point at the code, or the org chart. After shipping enough AI-governed projects, I'd point somewhere else: the system lives in the files that fence in what a model is allowed to generate. The longer I watch teams steer language models, the surer I am that the difference between a project that drifts and one that holds a line is decided here, in a file the model reads before i…