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Honestly, the concept of a screw you can screw in using a cross-shaped tool sounds pretty universal. Not surprised it would be infected elsewhere in the universe.
Why n X shape? Why not an L shape.
Nothing about an X is naturally the more logical shape and the wide range of screws on offer today is testament to that.
Radial symmetry. Four different positions you can put the screwdriver and it works. More than that and the material might be less sturdy, plus this is easy to manufacture.
