There is a saying."never judge a book by its cover". write

1. If the cover is not bright and beautiful, who will pay attention to the book in the first place?
2. If we want to buy a love story, and there is a car motor on the cover, will we buy such a love story?
3. If there is no mentioning about the author on a book cover and we dont know who wrote the book, well have big doubts to buy it.
4. If there is no pictures on the book cover printed for children, will they be interested in reading it?
5. If the cover has a bad quality printing, we can think that book printing will be difficult to read.