Narrative, fiction filmmaking is the culmination of several art forms: theater, art history, architecture. Whereas doc filmmaking is more pure cinema, like cinema verité is film in its purest form. You're taking random images and creating meaning out of random images, telling a story, getting meaning, capturing something that's real, that's really happening, and render this celluloid sculpture of this real thing. That's what really separates the power of doc filmmaking from fiction.