The document discusses copyright and the case of Biz Markie vs. Gilbert O'Sullivan. It notes that copyright is illegal and involves passing off someone else's work as your own. It outlines that Biz Markie was accused of taking Gilbert O'Sullivan's song without permission, though Biz released it anyway. The author believes Biz engaged in copyright infringement and the court ruling against him was correct. The document emphasizes the importance of enforcing copyright to prevent passing off others' work.