World models need theory of mind: Persimmon pairs user modeling with world modeling
CShorten30 · x · 2026-09-22
In a Weaviate Podcast discussion, Alexis, Manya, and Niloofar argue that a useful world model needs more than facts about the world — it needs a theory of how people react. Their Persimmon project treats user modeling and world modeling as twin goals: a high-fidelity simulation should help predict how a human might respond in different scenarios.
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