# Four-Lens Sweep — Debrief

> Four clean looks beat one loud argument. The point isn't the verdict — it's that the idea was seen whole.
> Use with `four-lens-sweep-guide.md`. The synthesis at minute 18 is the compressed version; this sheet is the full one.

## How to run this debrief

- Walk the four columns **in order** before any verdict — skipping straight to "ship / kill" throws away the sweep.
- Separate the facts from the assumptions you only assumed; the latter become owner-by-date checks before the call.
- Close on the upside pass on purpose — what the idea unlocks is part of the answer, not an afterthought.

## Read the four columns

1. **The fact/assumption line.** Which "facts" were really assumptions? Those are the ones to verify before the decision.
2. **The feeling spread.** Who was excited and who was uneasy, and did the room hear both without arguing?
3. **The risk/upside balance.** Which failure points had no answer in the room, and was the upside from the last pass worth what the risk pass flagged?

## The six debrief questions

**1. The verdict shift.**
"What did the sweep change — kill the idea, greenlight it, or reshape it?"
→ Targets: the decision delta — what the four passes moved that a single gut call would not.

**2. The load-bearing assumption.**
"Which assumption, if it turned out false, would move your answer the most?"
→ Targets: the one check that matters before committing.

**3. The quiet unease.**
"Whose quiet unease in the feelings pass deserves a follow-up conversation?"
→ Targets: the person who felt something but didn't argue — their signal is data, not noise.

**4. The hidden upside.**
"What is one upside the idea only surfaced once you were forced to look for it?"
→ Targets: the unlock that the risk-first room would have missed.

**5. The lens that surprised.**
"Which of the four passes told you something you didn't expect — and why did that lens catch it?"
→ Targets: meta-awareness of which lens your team habitually skips.

**6. The next sweep.**
"What's the next idea that deserves this same four-pass treatment — and when will you run it?"
→ Targets: transfer — scheduling the habit instead of ending the exercise.

## Failure modes of the debrief

| Failure mode | Why it happens | The rescue |
|---|---|---|
| It collapses to "ship it / kill it" | The synthesis skips the columns | Walk the four columns before any verdict; decide after the full picture. |
| The risk pass won the room | Negatives feel more rigorous | Re-read the upside pass aloud; weigh it against named risks on purpose. |
| Assumptions left unverified | It was faster to move on | Turn the fact/assumption line into owner-by-date checks before the decision. |