Research

Research

What we are learning about world models built from events: the argument, the evidence from a real city, and the limits we have found along the way.

Articles

San Francisco at 3:30 pm on 20 December 2025 in the interactive replay, with the reported-dark neighborhoods unlit

Essay ·

Fire to Continent

An event-driven world model of San Francisco, built from the city’s own records and tested on the day a substation fire darkened a third of the city. What it learned, how it rewinds to test a hypothesis exactly, how one incident is traced to its cause, and what it would take to model a continent.

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Series

Series · Eight papers

One truth. Many projections.

The architecture papers: a design doctrine in eight short papers, from recording facts once to standing behind a decision. Summaries of each, including why a model may represent the world but never become the record of it.

Read the summaries
Interactive

Dark Saturday

The blackout replayed on the real city, then rewound. Test a hypothesis of your own and watch its consequences spread.

Enter the demo
Method

How it works

Event-driven world models, learning inside the world, exact what-ifs, and the honest limits of the San Francisco model.

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Interrogate

Ask the world

Ask the model why something happened or what a change would do, and get answers from its own recorded events.

Ask the world