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.
2月26日，蔚来芯片子公司“神玑技术”宣布完成首轮超22亿元融资，投后估值逼近百亿。
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Yet a co-CEO model has yet to become a mainstream, long-term solution. Salesforce, SAP and Marks and Spencer all appointed co-CEOs in the early 2020s, lasting no more than two years.
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，这一点在91视频中也有详细论述
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