At the beginning of the film, the five artists are introduced to us with a caption indicating their first name and their age. All of them are introduced by their real first name, except for Michel Houellebecq's character, who is introduced as "Vincent (53)". Later into the film, it's revealed by the name plate at his front door that his family name is "Greilsamer". "Vincent Greilsamer" is a character (who is an artist) from Michel Houellebecq's 2005 novel "The Possibility of an Island". Robert Combas is introduced at the start of the film as "Robert (49)". However, in reality Robert Combas was actually not 49, but 59 years old at the release of this film.