The storytellers most likely include both the right- and the left-handed twin in the myth to represent the battle between good and evil or right and wrong.
This question refers to the Iroquois' creation myth, that is, the story belonging to the Iroquois' tribes that concerns the creation of the world and its natural phenomena.
In the story, the twins are used to represent the battle between good and evil or right and wrong. The right-handed twin is good and moral, whereas the left-handed twin is evil. The two fight and, in the end, the right-handed twin wins, which represents the idea that the good always prevails.
With the information above in mind, we can say that the storytellers most likely include both the right- and the left-handed twin in the myth to represent the battle between good and evil or right and wrong.
Learn more about the twins in the creation myth here:
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