From wiki.Primer is a 2004 American science fiction film about the accidental discovery of a means of time travel. The film was written, directed, and produced by Shane Carruth, a mathematician and a former engineer, and was completed on a budget of $7,000.[1]
Primer is of note for its extremely low budget, experimental plot structure, philosophical implications, and complex technical dialogue, which Carruth chose not to simplify for the sake of his audience. One reviewer said that "anybody who claims [to] fully understand what's going on in Primer after seeing it just once is either a savant or a liar."[2] The film collected the Grand Jury Prize at Sundance in 2004 before securing a limited release in US cinemas, and has since gained a cult following.
I watched this movie a little while ago. It really disturbed me though I didn't understand it. When the movie was done, I felt I wanted to puke. It has no effects, no fancy visuals, and a lot of it is gibberish dialog.
Somehow I want to entice you to watch it, like it and encourage me to watch it again. Give it a try.