If covers are supposed to capture the intricacies of a book’s material in one communicative Visible, then covers that use iconography copyright that function as their Formal mission assertion. Their basic - albeit deceivingly basic - graphic language doesn’t make for the sort of cover which you’d pick up for https://medium.com/@KindleSelfPublishing/creating-a-masterpiece-for-readers-through-the-art-of-book-formatting-and-layout-78c8594f6571