Future and past in a big puzzle. Are we now or is it past? Some call this time travelling
The film is a low-budget movie made by mastermind Shane Carruth that all the knowledge he had to be applied by using friends as actors and environments for easy shooting. Altough with his low-budget he filmed on real expensive material 16mm film. An now you are asking yourself who this is. One hint; Watch the guy with the black hair in the film.