The bug loop: four rounds of root cause diagnosis and regression tests breaking the spiral

The Bug Loop You Can't Escape: Root Cause Diagnosis with AI

1. The Loop That Never Ends A few days ago, the Aristotle project [1] — aimed at fully implementing the GEAR protocol — finally validated all its core technical pathways. The codebase had gone through its third refactoring, core features were working, and testing was complete. Right before merging the development branch into main for release, I ran a manual test and discovered that SKILL.md instructions weren’t being executed correctly — the model received the action but didn’t call task() to launch a background subagent. Instead, it loaded LEARN.md. From investigating this issue, more bugs kept surfacing: ...

2026-05-01 · 17 min