Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10162-x
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腾讯元宝使用指南 图源：元宝官方
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
Making the announcement, Mills said "a Scottish crowd is the best crowd."