Why do some people believe that the lliad and the odyssey had different authors?

Some scholars believe that the "Iliad" and the "Odyssey" may have different authors due to differences in style, themes, and narrative structure. The "Iliad" focuses on themes of war and heroism, while the "Odyssey" explores adventure and homecoming, suggesting distinct artistic intentions. Additionally, variations in language and poetic techniques have led some to argue that they were composed by different poets or that they evolved over time through oral tradition before being written down. This debate highlights the complexities of authorship in ancient texts.