Five Whys: Root Cause, Non-Prescriptive
The Trap
Accepting the first answer to "why" as sufficient, especially when it sounds plausible or comes from someone senior or established in the process.
The Reframe
Keep asking why the answer itself is true. The "five" in Five Whys is a loose heuristic, not a rule. It isn't prescriptive about stopping at exactly the fifth why, or insisting that you must reach it. The real discipline is knowing the difference between an answer that's genuinely load-bearing and one that's just the first plausible-sounding thing offered.
Steps
- Ask why something is the way it is.
- Take the answer, and ask why that is true.
- Keep going as long as each answer still feels like it's describing a symptom rather than a root cause.
- Stop when an answer holds up under another "why", not at a fixed count. Sometimes the honest end of the chain is "it's just convention", and that's a useful finding too.
Why It Works
Most explanations for "why we do it this way" are the first convenient layer, not the actual root cause. Treating the first answer as final means fixing, or accepting, the wrong layer of the problem.