Learning targets
- Document failures with what happened, evidence and likely causes.
- Choose a next step that tests one cause at a time.
Failures are data
A failed test recorded honestly is worth more than a success with no record. Write what happened, what you measured, and what you think the cause is — labeled as a hypothesis.
One variable at a time
Change one thing, re-test, record. Otherwise you can't tell which change made the difference.
Second-year extension:
- Write a failure analysis that distinguishes root cause from contributing factors.