What does Peter Brooks mean when he wrote, “Folktale and myth may be seen to show narrative as a form of thinking, a way of reasoning about a situation”?

Peter Brooks’s book “Reading for the Plot” examines the different approaches to storytelling throughout history.
This quote comes from the chapter in which Brooks describes the tenets of the folktale/myth, both of which function in societies as explanations of phenomena not easily understood by humans, such as the meaning of life and the changing of the seasons. Folktales and myths were particularly important before the advent of modern science, because people have always sought to create order and meaning where there is none.
Brooks cites Claude Levi-Strauss’s discussion of the Oedipus myth to explain what he means when he says that these narratives are “a way of reasoning about a situation.” Brooks summarizes Levi-Strauss’s assertion that Oedipus addresses the “unsolvable problem of mankind’s origins,” adding that the plot of the myth attempts to make sense of what doesn’t seem to make sense in one’s mind.
Overall, folktales/myths try to connect disparate facts and draw conclusions about life, people, and the world that we have historically found mysterious or inscrutable.