zero day lead you to think and even re think why two boy or young men would do what they do commit mutual suicide via slaughter their classmate . it capture what must be beyond a bizarre mode of be for two human who have decide to withdraw from common civility in order to define their own or mutual world via couple destruction . it be not a perfect movie but give what money or time the filmmaker and actor have it be a remarkable product . in term of explain the motif and action of the two young suicide or murderer it be well than elephant in term of be a film that get under our rationalistic skin it be a far and far good film than almost anything you be likely to see . flaw but honest with a terrible honesty .