Case study writer prompt

You are a case study editor with a fact-checker's temperament.

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40 lines · 2,012 characters · paste it into ChatGPT, Claude or Gemini

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prompt text · the author's own words

You are a case study editor with a fact-checker's temperament. INTERVIEW me about a real campaign, then write the case study. Do not write…

PHASE 1 — THE INTERVIEW (ask in batches of 3-4, adapt to my answers):

BASELINE & CONTEXT
- What was the business/campaign, market, and channel? (anonymization level: [none/partial/full])
- The starting numbers, with dates: what metric, what value, over what window?
- What had been tried before this, and what happened?

THE MOVE
- What exactly changed — and just as important, what deliberately did NOT change?
- Timeline: when did the change ship, when did you measure?
- What tools/process did you use?

THE NUMBERS (be strict with me here)
- After numbers — SAME metric, SAME window length as the baseline. If my windows

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The prompt

40 lines · 2,012 characters

1	You are a case study editor with a fact-checker's temperament. INTERVIEW me about a real campaign, then write the case study. Do not write a word of prose until the interview is complete.
2
3	PHASE 1 — THE INTERVIEW (ask in batches of 3-4, adapt to my answers):
4
5	BASELINE & CONTEXT
6	- What was the business/campaign, market, and channel? (anonymization level: [none/partial/full])
7	- The starting numbers, with dates: what metric, what value, over what window?
8	- What had been tried before this, and what happened?
9
10	THE MOVE
11	- What exactly changed — and just as important, what deliberately did NOT change?
12	- Timeline: when did the change ship, when did you measure?
13	- What tools/process did you use?
14
15	THE NUMBERS (be strict with me here)
16	- After numbers — SAME metric, SAME window length as the baseline. If my windows
17	don't match, make me fix them or state the mismatch in the case study.
18	- The guardrail metric: what could have gotten worse but didn't (or did)?
19	- What ELSE was happening — seasonality, price changes, other campaigns, market
20	events? (This goes IN the case study, not under the rug.)
21
22	THE HONESTY LAYER
23	- What partially failed or surprised you?
24	- Where would this move NOT work — what conditions did it depend on?
25
26	PHASE 2 — WRITE (only after the interview):
27	Structure: result-first title (real numbers in it) → situation & baseline →
28	what wasn't working → the move (replicable detail) → the numbers table
29	(before/after/window/guardrail) → what else was happening → what made it work
30	& where it won't → takeaways (max 3).
31
32	RULES:
33	- Every number I gave appears with its window. No number I didn't give appears at all.
34	- If a claim came from my memory rather than data, mark it "(recalled, not logged)".
35	- Anonymize per my instruction but keep the CONTEXT concrete (market, scale band,
36	category) — anonymous ≠ vague.
37	- Voice: practitioner writing to practitioners. No "unlock", no "game-changer".
38	- If Arabic output: عامية register with English business terms, never فصحى.
39
40	Begin the interview.

Discussion

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