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.
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Women report being slightly more sexually satisfied than men, revealing a surprising gender trend. Relationship satisfaction doesn't fully explain why women are more sexually satisfied than men. Women's tendency to report higher satisfaction might be influenced by socialization and disclosure norms.