The answer is that the Tree of Mystery causes people to make mistakes. The fable of Adam and Eve's "forbidden fruit" is a popular metaphor for succumbing to temptation. In its whole, the poem investigates the contradictory elements of humanity's values, such as empathy and poverty or mercy and tragedy. It also examines how our actions are influenced by our circumstances. In this part of the story, the fable shifts focus to the effect that eating from the Tree of Knowledge has on humans. They become aware of good and evil, but at a terrible price: misery and death. This shows that eating from the Tree of Knowledge was a bad idea because it caused people to make moral mistakes.