The document discusses the benefits of peer editing for improving writing. It notes that writers often know their topics too well to judge whether their writing is clear to new readers. Peer editing allows writers to get feedback from others on whether their writing is appropriate, organized, and easy to understand. The document also states that peer editing helps prepare writers for having their work reviewed in professional settings. It provides tips for both peer editors and writers, emphasizing the importance of honest but constructive feedback to strengthen writing.