A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
However, she doesn't feel they can replace the "authority" that legacy platforms and institutions hold as she says they are grounded in "credibility, consistency and history", which builds trust with audiences.
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