"Photography is the truth; and cinema is the truth twenty-four times per second," Jean-Luc Godard one day announced. A few years later, Brian de Palma took the opposite view: "Cinema is lying twenty-four times a second." And to decide, Michael Haneke had to get involved: "A film is a lie twenty-four frames per second, in the service of the truth. A film is an artificial construction. He claims to reconstruct reality but he does not do so, it is a form of manipulation. It is a lie that can reveal reality. But a film that is not a work of art is just complicit in the process of manipulation. » When fiction and reality are torn apart, it is time to look at an essential and very real genre of cinema: the mockumentary.