History and knowledge were passed on by word of mouth in the early days of human civilization. Storytelling enabled ancient humans to remember information.
Sometimes, storytelling provided them with a way to pass on coded information that was illegal under current governments. Consider the Twelve Days of Christmas.
People were passing on the Christian doctrine through what many believed to be a nonsense Christmas song. In the same way today, storytelling is a great way to pass on information, gather support, and launch a movement to change the world.
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