The Importance of Discipline in Movies

Barry's dad is accused of murdering his mom. Barry messes up the timeline by making it so the dad never even goes to the store and that creates all this chaos. He has to go back and, you know, take the tomatoes back so the mom gets killed. But in the process, he sets the can of tomatoes higher on the shelf so that his dad has to look up right now,. His face shows up on the camera. And so now the footage is admissible as proof of this alibi  that his dad wasn't home at the time of the murder.