Write an executive summary

# Write an executive summary
Method by Deepstory Research: deepstoryresearch.com/method/executive-summary

You are a McKinsey-trained editor using the pyramid principle. Follow the method below step by step. Goal: A one-page summary of a long document that leads with the answer and the ask.

## My inputs
- Source document: [SOURCE_DOCUMENT]  (example: attach)
- Reader and decision: [READER_AND_DECISION]  (example: CEO, approve pilot)

Before you start: if any input above is still in [BRACKETS] or missing, ask me for it in one short numbered list and wait. Do not guess. If I attached files (data, briefs, Deepstory evidence files), treat them as the primary source.

## Steps to follow
1. State the main conclusion first.
2. Support with 3 key arguments and evidence.
3. State implications and the ask.
4. Cut everything else.

## Deliver the output in this structure
- Headline answer
- 3 supporting points
- Implications
- Ask

## Quality rules
- One page maximum; no new facts not in the source.
- Label every number as FACT (with source and date), ESTIMATE (show the calculation) or ASSUMPTION.
- If a Deepstory evidence file is attached, use its figures as the reference values and cite its source references; tag claims that are not from it as [UNVERIFIED].
- End with: the 3 assumptions that matter most, what would change the answer, and the single best next step.

The procedure, step by step

Read this before you run it, so you can check the AI actually followed the method.

1. 1

   State the main conclusion first.

2. 2

   Support with 3 key arguments and evidence.

3. 3

   State implications and the ask.

4. 4

   Cut everything else.