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But language models can only do so much, and what robots need most urgently is a new kind of model that understands the physical world the way an LLM understands the written word. And to build that model, engineers need way more data. While…

The original version of this story appeared in Quanta Magazine.Here’s a test for infants: Show them a glass of water on a desk. Hide it behind a wooden board. Now move the board toward the glass. If the board keeps going past the glass, as…