The part labeled "Books Before the Printing Press" helps support the main idea of the text by providing historical context and explaining how books were created and accessed before the invention of the printing press. It highlights the limitations and challenges of book production during that time, such as labor-intensive processes, limited availability, high cost, and the importance of handwritten manuscripts. By understanding the difficulties and time-consuming nature of book production before Gutenberg's invention, it further emphasizes the transformative impact of the printing press and the significance of Gutenberg's contribution to the dissemination of knowledge and the democratization of information.
