Filled with
- Divergence
- One real action, decision, or piece of luck goes the other way.
- When
- the historical moment when that action actually happened
- Where
- the place and people first affected
- Style
- documentary alternate history, precise, no cartoon apocalypse
- End Date
- today
- Focus
- first-order effects, then institutions, then the present
- Constraints
- Keep physics and logistics real. No stacked miracles. Say what does not change.
The finished prompt
alternate-history-generator.any-fork.prompt
Write a grounded alternate history.
### The change
Point of divergence: One real action, decision, or piece of luck goes the other way.
When it happens: the historical moment when that action actually happened
Where / who it hits first: the place and people first affected
### How to write it
- Style: documentary alternate history, precise, no cartoon apocalypse
- End the timeline in: today
- Zoom in on: first-order effects, then institutions, then the present
- Hard rules: Keep physics and logistics real. No stacked miracles. Say what does not change.
### Method
1. State the real baseline in 2–4 sentences so the fork is clear.
2. Make the divergence small and mechanical — one failed action, one different decision, one piece of luck that goes the other way. Do not stack extra miracles.
3. Follow first-order effects (hours/days), then second-order (months/years), then the world as of today.
4. Keep physics, logistics, institutions, and incentives intact unless the divergence itself breaks them. No cartoon apocalypse unless the change actually implies one.
5. Mark speculation vs established fact. If numbers are uncertain, give a range and say why.
6. Say what does **not** change. Most of ordinary life continues.
### Structure
1. The day of the fork
2. The following weeks
3. Year 1
4. The next decade
5. Long tail to today
6. What still looks like our world
7. One-paragraph verdict: how this timeline differs, and how it does not
Be specific about dates, quantities, and institutions. Do not turn the story into a single-theme sermon.
Other presets of this prompt
- Banqiao warning never arrivesDivergence: During Typhoon Nina in…When: 5–8 August 1975Where: Banqiao Dam and the Ru…Write a grounded alternate history. ### The change Point of divergence: During Typhoon Nina in August 1975, Banqiao and the downstream cascade still…
- Fukushima pools boil dryDivergence: After the 11 March 2011…When: 11–31 March 2011Where: Fukushima Daiichi…Write a grounded alternate history. ### The change Point of divergence: After the 11 March 2011 tsunami, seawater injection and venting at Fukushima…
- Bhopal plume stays lowDivergence: On the night of the Union…When: 2–3 December 1984Where: Bhopal, Madhya Pradesh…Write a grounded alternate history. ### The change Point of divergence: On the night of the Union Carbide MIC release, the scrubber and flare stay…
- Three Mile Island breachDivergence: At Three Mile Island Unit…When: 28 March–early April 1979Where: Three Mile Island, near…Write a grounded alternate history. ### The change Point of divergence: At Three Mile Island Unit 2 the stuck-open PORV and confused instrumentation…
- Kyshtym tank boil-offDivergence: At Mayak in September 1957…When: 29 September 1957 and the…Where: Mayak Production Associatio…Write a grounded alternate history. ### The change Point of divergence: At Mayak in September 1957 the cooled high-level waste tank fails more…
- Windscale filters failDivergence: During the October 1957…When: 10–12 October 1957Where: Windscale (Sellafield)…Write a grounded alternate history. ### The change Point of divergence: During the October 1957 Windscale Pile 1 graphite fire, the chimney filters…
- Chernobyl sand boron failsDivergence: Helicopter drops of sand…When: late April to mid-May 1986Where: Chernobyl Nuclear Power…Write a grounded alternate history. ### The change Point of divergence: Helicopter drops of sand, boron, lead, clay, and dolomite fail to quench the…
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