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The paper introduces ImagiRep, a simulator-grounded benchmark showing that spatial reasoning benefits from diverse representations beyond RGB, and proposes GEARS, a lightweight test-time strategy for adaptively selecting representations to improve reasoning about unobserved states.
Analysis of 2.6 billion sketches from 236 countries reveals hidden cultural variation in how common concepts are visually represented, showing that visual imagery preserves rich semantic and cultural structure that language models compress.