Harpy (2000)

While researching for a movie, the school's film club find a scrap of paper in a book. On the paper is written: "Harpies first appeared in Greek mythology. They were spirits who would capture the souls of the dead. However, as time passed, they were able to take on physical forms. They can take over a living human making him cruel and insatiable..." Is this merely information, or is it a warning?