This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.
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Not so much a bad night at the office as a high-stakes, avant-garde masterpiece of self-destruction, Ramy Bensebaini’s performance for Borussia Dortmund as they crashed out of Bigger Cup is destined to go down in the annals as one of the most hapless in the tournament’s history. While there have been costlier mistakes (hello, Loris Karius) and far more high-profile disintegrations (bonjour, b@nter-era PSG), it is difficult to recall any one elite professional footballer being responsible for quite so many howlers in one game as the hapless Algerian left-back.
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