The document discusses several media theorists' perspectives on genre. Steve Neale recognized that genres are dynamic processes that evolve over time, as evidenced by how the vampire genre changed from Nosferatu to Interview with the Vampire. Jason Mittell described how genres operate within industries, audiences and culture. Genres help industries market to audiences and allow audiences to choose what to consume. Rick Altman discussed the different pleasures genres provide audiences: emotional, visceral, and intellectual. Nicholas Abercrombie noted that genre boundaries are shifting and genres are becoming more permeable. David Buckingham and Christian Metz both argued that genres are constantly negotiated and changing, rather than fixed categories.