Origami, folding paper into some objects, is difficult. Someone says it requires dexterity. But I think dexterity is just an aspect of origami.
It's often said that mathematicians are good at origami. Indeed, a sense of math would help creating new handworks. Most people, however, doesn't create a handwork by himself. They just make a few typical well-known objects like 'crane'.
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The locomotive I folded yesterday is also an honorable but unfamiliar work developed by someone else. The only acceptable work I've ever developed is an simple elephant.