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Spent 3 hours reading the official documentation. Forge wants to turn fine-tuning into an all-in-one service - you just feed it data, and it handles everything else. But how low is the barrier really?

When you need to find nearby restaurants among a million points, brute force requires calculating a million distances. A quadtree cuts space into grids, reducing searches to about ten. This article explains quadtree construction, queries, and real-world applications using everyday analogies.