Symbolism In Scarlet Letter

Why would an author put symbolism in his writing? Can it make a story interesting, mysterious, or puzzling? In the scarlet letter written by Nathaniel Hawthorne the "A", the rosebush, and the black man are prominent parts of symbolism in the story. First the A in the book is worn by Hester and it means adultery. The a’s very important because it made Hester stand out and it brought more character to her. This specific letter a.k.a the scarlet letter Hester wore on her chest made up the storyline as a sinner everyone knows about. “Thus the young and pure would be taught to look at her, with the scarlet letter flaming on her breast,—at her, the child of honorable parents,—at her, the mother of a babe, that would hereafter be a woman, —at