Reverse Chronology - Purpose

Purpose

The unusual nature of this method means it is only used in stories of a specific nature. For example, Memento features a man with anterograde amnesia, meaning he is unable to form new memories. The film parallels the protagonist's perspective by unfolding in reverse chronological order, leaving the audience as ignorant of the events that occurred prior to each scene (which, played in reverse chronological order, will not be revealed until later) as the protagonist is.

In the film Irréversible, an act of homicidal violence takes place at the start of the movie (i.e. it is the final event to take place). During the remainder of the film we learn not only that the violence is an act of vengeance, but what exactly is being avenged. The film was highly controversial for its graphic nature; had the scenes been shown in chronological order, this violent content would make it a simple, and pointlessly brutal, revenge movie. However, as it is, told in reverse, the audience is made to consider the exact consequences of each action, and there is often 'more than meets the eye'.