Claude Roux uses a refined version:

> LLMs have a lot of knowledge but few competencies. If you constrain them to output knowledge and use that to further constrain results, you’ll go far. For context management, I have the system generate `log.jsonl` and `log.py` (which queries the other document). Whenever an action is processed (an error’s corrected etc.) the system adds something to `log.jsonl`. If it needs to know what happens, it uses `log.py` to query and display only the relevant/required information (like a date, errors or attempted fixes) reducing tokens. - https://alexalejandre.com/interviews/interview-with-claude-r...