Framework
fpef
FPEF

Find, Prove, Evidence, Fix — a systematic debugging framework for complex systems.

FPEF (Find-Prove-Evidence-Fix) is a structured debugging methodology. It replaces ad-hoc investigation with a repeatable cycle.

The Cycle
the cycle
The Cycle
  1. Find — Reproduce and isolate the symptom
  2. Prove — Form a falsifiable hypothesis about root cause
  3. Evidence — Collect data that confirms or refutes the hypothesis
  4. Fix — Apply minimal change, verify, document
Why it works
why it works
Why it Works

Most debugging fails at step 2 — people guess instead of proving. FPEF forces hypothesis-driven investigation.

See the full writeup or Cognitive OS.