Diagnose 🔬

A discipline for hard bugs. Skip phases only when explicitly justified.

Phase 1 — Build a feedback loop

This is the skill. Everything else is mechanical. If you have a fast, deterministic, agent-runnable pass/fail signal for the bug, you will find the cause.

Spend disproportionate effort here. Be aggressive. Be creative. Refuse to give up.

Ways to construct one — try in roughly this order