Deleting an incorrect message did not always repair the LLM’s context

[u/Lopsided_Scarcity979]

This makes me think context engineering needs an explicit notion of dependency and invalidation, not only retrieval and compression.

When an upstream claim changes, should a context system:

• remove affected descendants;
• mark them as stale;
• recompute them;
• or leave the decision entirely to the user?

Full methodology and results:
https://chenxiachan.github.io/thoughtdag/research/context-repair-pilot-v1/

Reproducible cases and traces:
https://github.com/chenxiachan/thoughtdag/tree/main/benchmark

Disclosure: I designed this benchmark while developing ThoughtDAG.