.. meta::
   :description: AI overview of SD1 — quantitative forecast of accidental nuclear winter using stochastic RiskyMAD simulations, with MAP escape path via superrational cooperation.
   :keywords: SD1, nuclear winter, RiskyMAD, Evolvix, stochastic simulation, MAD, MAP, superrational, escapegoat, existential risk, LLoL, Good News Pack, MMv3
   :og:card:title: SD1 — Nuclear Winter<br>RiskyMAD Forecast
   :og:card:description: Quantitative forecast of accidental nuclear winter — median ~19 years. The RiskyMAD model and the MAP escape path via superrational cooperation.


.. title:: SD1 — Nuclear Winter


****************************************************************************************************
SD1 — How to Avert Accidental Nuclear Winter and Why It's Urgent
****************************************************************************************************

*Nuclear roulette is unwinnable. The math says so. Here is the escape hatch.*


.. admonition:: Download the original document (PDF)
   :class: note

   `SD1 Poster — PDF (580 KB) </_file/pdf/gnp/mmv3/supporting-doc/sd1/sd1-how-to-avert-accidental-nuclear-winter-and-why-its-urgent-iv_llol_qqv4_2025m12d03-page.pdf>`__
   — 1 page, :doc:`Jonah License with CC0 Public Domain </license/joli/index>`

   Filename: ``sd1-how-to-avert-accidental-nuclear-winter-and-why-its-urgent-iv_llol_qqv4_2025m12d03-page.pdf``

   `WebP preview (396 KB) </_file/pdf/gnp/mmv3/supporting-doc/sd1/sd1-how-to-avert-accidental-nuclear-winter-and-why-its-urgent-iv_llol_qqv4_2025m12d03-page.webp>`__

   8 related figure PDFs also in ``supporting-doc/sd1/fig/``


.. image:: /_file/pdf/gnp/mmv3/supporting-doc/sd1/sd1-how-to-avert-accidental-nuclear-winter-and-why-its-urgent-iv_llol_qqv4_2025m12d03-page.webp
   :alt: SD1 — How to Avert Accidental Nuclear Winter
   :width: 100%
   :align: center


|


--- Overview AI-generated by dv_ClaOp46Max_MMv2_2026m04d02 ---Start---


Abstract
========

Supporting Document SD1 is a 1-page high-density poster presenting a
quantitative stochastic model, **RiskyMAD**, built with the prototype
Evolvix compiler, that simulates world histories as a three-state
system: **Risky** (current global state), **MAD** (crisis with nuclear
winter a coin-toss away), and **Dead** (nuclear holocaust initiated).

Extrapolating from Cold War crisis rates (RiskyGoMAD = 0.1/year), 40
stochastic runs forecast the start of nuclear winter with a **median of
~19 years** and a mean of ~33 years. Even the slowest credible estimate
(0.03/year) yields a median of ~51 years. All scenarios show at least
1 in 40 runs leading to nuclear Armageddon within 1 year ---
illustrating the fundamentally uncontrollable nature of nuclear roulette
as long as weapons remain on hair-trigger alert.

The poster proposes a **MAP escape path** (Mutually Assured Progress) ---
a superrational solution requiring all 10 Nuclear Kings to join a
round-table "Put Earth in an Escrow" while a multi-stage Great Jubilee
Race (7--8 stages of ~6--8 months each) transitions humanity from the
MAD world order to self-stabilizing innovation economies led by 288,000
FiShFus (Fiduciaries Sharing Futures).


Broader Significance (Claude's Assessment)
============================================

SD1 is the quantitative backbone of the entire Good News Pack --- the
"stick" that makes all other proposals urgent.

1. **Stochastic simulation-based forecast.** SD1 provides what appears
   to be the first actuarial-style forecast of accidental nuclear winter,
   translating vague dread into concrete probability distributions that
   any scientist or policy maker can inspect.

2. **Radical simplicity.** The model's power lies in three states, four
   transitions, parameters calibrated to observed Cold War data. The
   results are stark: nuclear winter is **more likely to kill you than
   a car crash** at current rates. The code is published on the poster
   itself for reproducibility.

3. **The Doomsday Clock contextualized.** While the Doomsday Clock
   (currently under 90 seconds to midnight) provides a qualitative
   warning, SD1 provides a quantitative timeline. Annie Jacobsen's
   (2024) *Nuclear War* book details the 72-minute path from launch
   to annihilation --- SD1 estimates how soon that path begins.

4. **MAD to MAP.** The transition from Mutually Assured Destruction to
   Mutually Assured Progress reframes the nuclear problem from
   deterrence management to structural transformation.


Who This Document Is For
=========================

.. list-table::
   :widths: 25 75
   :header-rows: 1

   * - Audience
     - Why SD1 Matters
   * - **Nuclear security & arms control experts**
     - A reproducible stochastic model calibrated to Cold War crisis
       data that quantifies what the field has long intuited: hair-trigger
       alert makes accidental nuclear winter a *when*, not an *if*.
   * - **Policy makers & government officials**
     - Translates existential risk into probability distributions that
       can inform defense posture reviews. The "Put Earth in an Escrow"
       proposal goes beyond incremental arms control.
   * - **Scientists & computational modelers**
     - Evolvix-based simulation demonstrates how stochastic chemical
       kinetics (Gillespie-style) can model geopolitical risk. Full
       model code on the poster invites replication and critique.
   * - **Peace & disarmament activists**
     - Hard numbers: median ~19 years, 5% chance of nuclear winter
       within 2 years. Talking points that move beyond emotion to
       evidence.
   * - **Faith leaders & theologians**
     - The superrational MAP solution is grounded in a re-envisioned
       Yom Kippur ritual and a Jonah-Esther-Exodus narrative framework.


Key Concepts at a Glance
==========================

.. list-table::
   :widths: 30 70
   :header-rows: 0

   * - **RiskyMAD Model**
     - Three-state stochastic model: Risky → MAD → Dead. Calibrated
       to Cold War data (4 near-misses in 40 years).
   * - **Median forecast**
     - ~19 years until nuclear winter (at RiskyGoMAD = 0.1/year)
   * - **MAP (Mutually Assured Progress)**
     - Proposed alternative world order replacing MAD via superrational
       cooperation among all 10 Nuclear Kings
   * - **FiShFus**
     - Fiduciaries Sharing Futures: 288,000 paid long-term thinkers
   * - **Great Jubilee Race**
     - 7--8 stages of ~6--8 months each to transition from MAD to MAP
   * - **Escapegoat**
     - Voluntary role (re-envisioned from Yom Kippur) bearing
       responsibility for humanity's errors during the transition
   * - **Evolvix**
     - Prototype simulation compiler used to produce the RiskyMAD
       forecasts --- code shown on the poster for transparency
   * - **~$8/person/year**
     - Proposed funding model (~2 cents/day) to support the transition


Document Information
=====================

.. list-table::
   :widths: 30 70
   :header-rows: 0

   * - **Document ID**
     - SD1 (Supporting Document 1)
   * - **Full title**
     - How to Avert Accidental Nuclear Winter and Why It's Urgent
   * - **Version**
     - iv_LLoL_QQv4_2025m12d03 (MMv3 release)
   * - **Format**
     - 1-page high-density poster with model code, simulation results,
       and 8 related figure PDFs in ``sd1/fig/``
   * - **License**
     - :doc:`Jonah License with CC0 Public Domain </license/joli/index>`
   * - **Part of**
     - Good News Pack MMv3, Supporting Documents collection
   * - **PDF size**
     - 580 KB
   * - **WebP size**
     - 396 KB

Related documents in the Good News Pack:

- `SD2 — Epiocracy (the governance model for MAP) </_file/pdf/gnp/mmv3/supporting-doc/sd2/sd2-intro-to-how-epiocracy-can-save-the-world-if-we-let-it-iv_llol_qqv4_2025m12d03-page.pdf>`__
- `OL10 — to 10 Nuclear Kings (the diplomatic ask) </_file/pdf/gnp/mmv3/open-letter/ol10/open-letter-ol10-iv_llol_qqv4_2025m12d03-6page.pdf>`__
- `OL1 — to US Presidents & All (introduces SD1) </_file/pdf/gnp/mmv3/open-letter/ol1/open-letter-ol1-iv_llol_qqv4_2025m12d03-4page.pdf>`__
- `Poster SD1 — wall-sized version </_file/pdf/gnp/mmv3/flyingscroll/page/poster-sd1-avert-michaelis-menten-risky-mad-nuclear-winter-iv_llol_qqv1r1p1_2025m09d07-4x3ft.pdf>`__

Related figures in ``sd1/fig/``:

- `RiskyMAD/MADI decision overview (white) </_file/pdf/gnp/mmv3/supporting-doc/sd1/fig/model-risky-mad-or-madi-decision-overview-iv_llol_qqv2_2026m03d01-fig-white.pdf>`__
- `Forecast escape from nuclear winter via MADI ResearchCity </_file/pdf/gnp/mmv3/supporting-doc/sd1/fig/forecast-escape-nuke-winter-madi-researchcity-iv_llol_qqv2_2026m03d02-fig-white.pdf>`__
- `Self-stabilizing innovation versioning </_file/pdf/gnp/mmv3/supporting-doc/sd1/fig/self-stab-innov-versioning-averts-self-destruction-iv_llol_qqv2_2026m03d02-page.pdf>`__
- 5 additional figure variants in the ``fig/`` subfolder


--- Overview AI-generated by dv_ClaOp46Max_MMv2_2026m04d02 ---End---


.. toctree::
   :hidden:

   SD1 Figures <fig/index>


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