Connect with us

Hi, what are you looking for?


Primer Movie Explained: 7 Things You Should Know To Understand Shane Carruth Sci-Fi

Shane Carruth’s ‘Primer’ is not your usual time travel movie. It’s a film that makes you think hard and watch more than once to understand everything.

With a shoestring budget of just $7000 and a plot that twists through the complexities of time travel, Shane Carruth’s 2004 indie masterpiece, ‘Primer,‘ has become a touchstone in sci-fi cinema. For those still trying to make sense of this film, here are seven key points to guide your understanding of ‘Primer.’

7. The Creation of the Time Machine

‘Primer’ begins with the invention of the time machine. Originally intended to reduce gravitational effects on objects, the machine is the brainchild of two engineer protagonists, Abe and Aaron. They basically end up creating a device that sends the object in it back and forth through time.

6. What is the A-to-B Loop?

Central to understanding ‘Primer’ is the A-to-B loop concept. This loop explains the machine’s operation: an object placed inside at a specific time travels back and forth in time, completing approximately 1300 cycles. The start time is labeled as the ‘A’ end and the end time as the ‘B’ end, forming a continuous temporal loop.

5. How Time Travel Works?

‘Primer’ is different from conventional time travel portrayals. Here, time travel involves physically staying in the machine, traveling back at a rate of one minute per minute. To return to the past, one must start the machine (A end), wait for a set duration, then enter the machine for an equal amount of time with an oxygen supply, finally emerging back at the start time (A end).

4. What’s the Purpose of the 15-minute Timer?

The 15-minute timer is a crucial safety measure to prevent travelers from encountering their past selves. By setting this timer, they ensure a time buffer, allowing them to avoid potentially catastrophic paradoxes.

3. Granger is a Mystery

One of ‘Primer’s’ more puzzling elements is the character Granger, who inexplicably travels back in time. His motivations and the consequences of his actions are left unexplored, and according to reports, Carruth isn’t sure about it as well.

2. Carruth Believed the Film Should Be Watched For More Than Once

Director Shane Carruth has openly stated that understanding ‘Primer’ in its entirety likely requires multiple viewings. The film’s layered narrative and subtle details are designed to reveal more upon each viewing.

1. Major Plot Points Are Hidden in Plain Sight

Lastly, ‘Primer’ is unique in its storytelling approach. Key plot points are embedded in casual dialogues and are easy to miss. This narrative style challenges the viewer to pay close attention to the unfolding story, which makes each viewing a new discovery.



The actor has sparked curiosity among fans with a tease about returning to the iconic space saga as Jar Jar Binks.


Paramount+ is resurrecting Ziva for a new adventure with her lover.


In the wake of the massive global success of ‘Wonka,’ which raked in over $617 million, director Paul King hints at the potential for...


At the ‘Dune: Part 2’ premiere in New York City, Florence Pugh found a moment to chat with ET and updated fans on the...


NBC’s new spinoff of the hit series ‘Suits,’ set in Los Angeles, has announced Lex Scott Davis as its female lead, according to Variety.


She thinks the franchise has told its story and there's nothing new to add.

You May Also Like


He learned from this and is trying to improve his acting skills.


There's exciting news for Spider-Man fans: Sony is working on two new movies. One will focus on Spider-Man's enemies, and the other will have...


He says they made a new version of his movie without his permission.


He laughed and asked how people think they know the movie's budget.