What Spatial Memory Must Store: Occlusion as the Test for Language-Agent Memory

In three linesStudy on spatial memory for language agents. "Memory palace" systems anchor each memory to world coordinates. Pre-registered experiment: standard linear blend (spatial proximity + recency + importance) fails (Delta-Hit@5 -0.0375, p=0.306), while geometry-led weighting wins decisively (+0.3208, p<0.001). Confirms occlusion requires geometry.

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