Primer

Primer is a movie that explores the idea of time travel and the consequences of a project like this. A special aspect I noticed about the filming of the movie is that, like most time travel films, the plot is not linear and flashes from scene to scene. The director also chose not to "dumb down" the vocabulary and scientific ideas used between the two researchers. These two details makes this movie very confusing.
As the film progresses, the relationship between Abe and Aaron deteriorates. The stress between the two about what to do with the time travel machine they have accidentally created reveals that they have been working without the others' knowledge, manipulating each other in order to achieve what they each believe is right. Coupled with the idea of time travel and the non-liner plot line, this also makes the movie very difficult to follow.