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World models that ignore human beliefs predict the wrong actions, new research shows

Science · en

World models that ignore human beliefs predict the wrong actions, new research shows

The Decoder · Aug 22, 2026, 9:00 AM UTC

Current world models like Sora or Genie only simulate physics and ignore what people think, want, or feel. The new "Mental World Modeling" framework adds mental variables like beliefs and intentions. Even weaker language models using this approach outperform stronger models without mental modeling.…