# Prompt repair log

| Version | One prompt change | Visible result | Source check |
| --- | --- | --- | --- |
| V1 | Baseline vague request |  |  |
| V2 | Add source and output contract |  |  |
| V3 | Add one example |  |  |

Learner observation:

Explain-it-back:
The useful improvement was ______ because ______ became directly checkable.
Prompting could not supply the deadline because ______.