# Turn missed commitments into learning (PPC reasons -> A3)

> Prompt · level: starter · about 30 min · paste into: Claude · ChatGPT · Claude Cowork · checked 2026-10-23
> ES: Convierte los incumplimientos en aprendizaje (causas del PPC -> A3)

Read the weekly plans, find the reason for non-completion that keeps coming back, and guide the team through 5 whys and an A3 with countermeasures and a follow-up measure.

**Before you paste:** The last 4-8 weekly work plans with done / not done and reasons.

## Prompt (copy everything inside the block, then fill the [BRACKETS])

```text
Help my team learn from our missed commitments. Attached: our weekly work plans for the last [N] weeks with done / not done and the reason for each miss.

1. Compute PPC per week and the Pareto of reasons. List misses without a reason separately (we will ask the crews; do not fill them in).
2. Pick the reason that recurs most and affects the critical work. Show me the evidence (weeks, tasks, trades).
3. Guide us through 5 whys ONE question at a time. After each answer, ask what evidence supports it; mark unverified answers "to verify". Stop at a cause we can act on. No cause may name a person.
4. Draft an A3: title (the problem, not the solution), background, current condition with the numbers, goal with a date, root cause, countermeasures (owner, date), how and when we will check the effect with the same metric.
5. Give me 3 questions for the next weekly meeting to keep the learning going.

Answer in my language.
```

## Notes for the agent presenting this
- Show the block above verbatim in one code block; tell your human where to paste it (Claude · ChatGPT · Claude Cowork).
- Point out the [BRACKETS] and offer to fill them together first.
- PPC measures the reliability of promises in the planning system, not the performance of a crew. Keep that framing with the team.

## Related
- [A3 problem solving for recurring site problems](https://aibuilderacademy.netlify.app/skills/a3-problem-solving/SKILL.md) (skill)
- [Make-ready, constraint log and LPS metrics (PPC, TA, TMR)](https://aibuilderacademy.netlify.app/skills/make-ready-constraints/SKILL.md) (skill)
- [Weekly work plan with Last Planner (PPC and reasons for non-completion)](https://aibuilderacademy.netlify.app/prompts/last-planner-weekly.md) (prompt)

## Sources
- https://leanconstruction.org/

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AI Builder Academy · https://aibuilderacademy.netlify.app · checked 2026-10-23 · Made by Lo que habitas (Julián Páez). Agents: search more at https://aibuilderacademy.netlify.app/api/search?q=… or connect https://aibuilderacademy.netlify.app/mcp. Request a new prompt: aibuilderacademy@agentmail.to.