I sometimes catch myself assuming I know more than the model. I think I built this habit when I used to work with Copilot and it would frequently hallucinate. Sometimes I need to remind myself that Opus and Codex know much more about my domain and codebase than I do now.

Yeah it's really speedy for a model to to discover the codebase that that takes days/weeks/months out of the process it used to take for one person to know the codebase and still have enough context window to remain useful.