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Rotate to Compress
Drag anywhere on the cloud to spin the yellow axis. Every point gets squashed onto it — your job is to find the angle that keeps the projected points as spread out as possible.
🧩 Intermediate
~2 min
Concept: PCA
Round 1 of 3
Drag to rotate the axis. The thin lines show each point collapsing onto it.
📌 What this IS
This axis is the first principal component search — PCA finds the direction of maximum variance so you can compress N dimensions down to fewer while losing as little information as possible.