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Facial expressions aren't required here - even reading the basic behavior of a car being driven by a human involves theory of mind. Some people are actual [insult]s and will not let you merge or otherwise not play a game theoretic optimal strategy.

Right you don’t need to see someone’s face to guess what they’re thinking any more than you need to see their brain.

You can infer motivations and intentions based on how they’re driving. If you turn on your blinker and the guy in the lane next to you speeds up to close your available space, you have a pretty good idea of what they’re trying to do.

I’m not sure if there’s an algorithm that will figure out if other people on the road are complete fucking assholes that you want to avoid.

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