The article explores how comparing literature can be studied in two main ways: by looking at facts and by considering ideas and interpretations. The focus used to be mostly on facts, like how one book influences another. However, there is also value in thinking about different interpretations of literature, which has become more popular in recent years. Both ways of studying literature are important and should be used together for the best results. This balanced approach is seen as the best way for comparing literature in the future.