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Massive economic simulations with thousands if not millions of agents to front run the global economy and stock market.

Fully interactive realtime NPCs in videogames at scale.

Recommender systems that simulate individual consumers.

Crazy shit

About your first example, isn’t the butterfly effect preventing this from being useful? One agent in your simulation decides to sell, and starts an avalanche, that won’t happen in reality?

When you run tens of thousands of simulations for complex economic models, you actually do want to see the extreme outliers too. I can't recall who said it, but in finance the interconnected incentives make so-called Black Swan events much more likely and frequent than models or theories can comfortably account for.

In a way... when it's finance, they should be maybe called Gray'ish Swans?

Run the sim many times... faster than it can run on actual humans and compute a probability density for specific events.

Better yet use it to dimulate counterfactual phenomena like market manipulations ypu intend to enact...

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