At the heart of the company's "people investment" culture is Pixar University, an on-the-job training program that offers hundreds of courses in art, animation, and filmmaking. All of Pixar's employees are encouraged to take classes in whatever they like, whether it's relevant to their job or not. At other studios, there's a clear distinction between the "creatives," the "techies," and the crew. But Pixar's unique culture doesn't distinguish between them — everyone who works on the movies is considered an artist. Everyone works together to tell stories, and as such, everyone is encouraged to devote at least four hours of the workweek to class. The classes are filled with people from all levels of the organization: janitors sit next to department heads... No one can make a movie alone, and a team of good storytellers can fix a bad story, but a poor team cannot. If a script isn't working, the whole team works together to fix it. The writers, the animators, and the director all pitch in without regard to their official role or job title.