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by intransigent 3485 days ago
I think it's a sphere packing thing. [0] Equally sized circles touching on edges "like" to pack into a six-up orientation, not unlike a revolver pistol.

My hunch is that it's an artifact of pi, somehow. Six being easily factored to three, which has close proximity to pi.

[0] https://en.m.wikipedia.org/wiki/Sphere_packing