While books are a great way to tell stories and pass on information to future generations, they aren't the only ones with that power. Indeed, many stories, tales, songs, proverbs are often not conveyed by books.
So how are they still alive? folk wisdomr? It's simple, they are spread by oral tradition. That is, they are passed orally from one generation to another. That is the function of oral tradition.
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Thus, the oral tradition preserves a culture, a popular knowledge, only with orality, from one generation to the next. Furthermore, this tradition emerged at the beginning of human life on Earth, when there was still no writing, or any other way of recording stories.
O folklore is also a strong example of oral tradition. This is because, although the tales and legends are written, they change several times, depending on locality and culture. Like the case of Saci Pererê, which can be called several names.