"This is essentially a development kit for dexterity. You get this hardware, you explore what can be done in terms of dexterity, then that helps you work out what you want to build if you're going to build a bigger system, or a bigger project, or deploy something," explains Walker.
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Point lookups are useful, but the operation you'll reach for more often is a range query: give the tree a rectangular region and retrieve every point inside it, without scanning the entire dataset.