Why does the fork have to be on the napkin when you set the table?

The fork is placed on the napkin when setting the table to create a neat and organized appearance. This arrangement not only enhances the visual appeal of the table setting but also signifies that the fork is ready for use. Additionally, the napkin helps to protect the fork from any potential contaminants on the table surface. Overall, it contributes to a more formal and hospitable dining experience.