There are six main types of documentaries: fully narrated documentaries use voiceovers to provide context to visuals and make sense of the topic; fly on the wall documentaries rely only on observation without interference to allow viewers to draw their own conclusions; mixed documentaries use a combination of interviews, observation, and narration to advance an argument; self-reflexive documentaries acknowledge the camera and filmmaker to create a view of reality; docu-dramas combine fictional reenactments with exposition elements but are criticized as delivering only fiction; and docu-soaps follow people's daily lives but are disputed as truly documentary.