The Social Network—a movie made when Facebook was less than seven years old and the social media era was relatively new—seemed destined to age poorly. But in the decade since its premiere in October 2010, the film’s depiction of the website and its young founder, Mark Zuckerberg, is more relevant than ever.

Even if you haven’t logged onto Facebook in years, the film offers plenty to love, from David Fincher’s detailed direction to Aaron Sorkin’s Oscar-winning script. In honor of its 10-year anniversary, here are 10 facts about The Social Network.

1. Aaron Sorkin started writing the script for The Social Network before the book it's based on was published.

Aaron Sorkin makes a cameo in The Social Network (2010). Merrick Morton, Sony Pictures Home Entertainment

The Social Network is officially an adaptation of The Accidental Billionaires, Ben Mezrich's 2009 book detailing the founding of Facebook. But according to screenwriter Aaron Sorkin, he had already completed 80 percent of the script by the time he read the book. The project came to him in the form of a 14-page book proposal the publisher was shopping around to filmmakers ahead of the title's release. “I said yes on page three," Sorkin told Deadline in 2011. "That’s the fastest I’ve ever said yes to anything."

Instead of waiting for The Accidental Billionaires to be completed and published, Sorkin started working on the script immediately, doing his own first-hand research for much of the process instead of referring to the book.

2. Shia LaBeouf turned down the role of Mark Zuckerberg in The Social Network.

When Transformers star Shia LaBeouf turned down the role of The Social Network’s lead character, Jesse Eisenberg was hired to play Mark Zuckerberg instead. Superbad's Jonah Hill was another star who came close to being cast in the movie, in his case as Napster founder Sean Parker; ultimately, Fincher decided Hill wasn’t right for the role and cast Justin Timberlake instead.

3. The Social Network wasn’t filmed at Harvard.

Harvard University is integral to the legend of Facebook, and setting the first half of The Social Network there was non-negotiable. Filmmakers ran into trouble, however, when attempting to get the school's blessing. The 1970 adaptation of Love Story been shot there, and damaged the campus; the school has reportedly banned all commercial filming on the premises since then. To get around this, The Social Network crew shot the Harvard scenes at Johns Hopkins University in Maryland and two prep schools, Phillips Academy Andover and Milton Academy, in Massachusetts.

4. David Fincher did sneak one shot of Harvard into The Social Network.

To convince the audience that they were indeed seeing Harvard, Fincher couldn’t resist sneaking in a shot of the campus’s iconic architecture. When Jesse Eisenberg runs across Harvard Square (which is not on Harvard property) in the beginning film, some nearby arches (which are on Harvard property) appear in the background. Fincher got the lighting he needed for this scene by hiring a street mime to roll a cart with lights on it onto the campus.

“If security were to stop him, the mime wouldn’t talk," The Social Network’s director of photography Jeff Cronenweth told Variety. "By the time they got him out of there, we would have accomplished our shot.”

5. Natalie Portman gave Aaron Sorkin the inside scoop on Harvard.

Natalie Portman attended Harvard from 1999 to 2003, briefly overlapping with fellow star alum Mark Zuckerberg. While enrolled, she dated a member of one of the university’s elite final clubs, which are an important part of The Social Network’s plot. When she learned that Sorkin was writing the screenplay for the movie, she invited the writer over to hear her insider knowledge. Sorkin gave the actress a shout-out in the final script. During one of the deposition scenes, Eisenberg's Harvard-era Zuckerberg is described as “the biggest thing on a campus that included 19 Nobel Laureates, 15 Pulitzer Prize winners, two future Olympians, and a movie star.”

6. Armie Hammer and his body double went to twin boot camp for The Social Network.

Armie Hammer and Josh Pence (as Armie Hammer) in The Social Network (2010). Sony Pictures Home Entertainment

Armie Hammer is credited as playing both Cameron and Tyler Winklevoss, but he wasn’t acting alone in his scenes. Josh Pence was cast as a body double and Hammer’s face was digitally pasted over his in post-production. For every scene where both twins appear on screen, Hammer and Pence played separate Winklevi, and then they would swap roles and shoot the scene again. This method allowed the characters to physically interact in ways that wouldn’t have been possible with split screens. Pence’s face may be missing from the movie, but his physical performance was still essential to selling the brothers' dynamic. He and Hammer worked with an acting coach for 10 months to nail down the characters’ complementary body language.

7. The Social Network's tagline was changed at the last minute.

For The Social Network’s main poster, designer Neil Kellerhouse made Jesse Eisenberg’s face the focal point. Over it, he superimposed the memorable tagline: “You don’t get to 500 million friends without making a few enemies.” Originally, the text read “300 million friends,” but it was changed under the assumption that Facebook would hit half a billion users in time for the movie’s October 2010 release.

“We were really hedging our bets," Kellerhouse told IndieWire. "But we scooped them on their own story because right as the film was coming out they got 500 million [members] so we got their publicity as well. It worked out super serendipitously.”

8. Fight Club’s Tyler Durden (kind of) makes a cameo in The Social Network.

Sharp-eyed viewers may have noticed the Easter egg David Fincher snuck into The Social Network. In the scene where Mark Zuckerberg is checking someone’s Facebook to cheat on a test, the name “Tyler Durden” can be seen in the top-left corner of the profile. Tyler Durden is the name of the narrator’s alter ego (played by Brad Pitt) in 1999’s Fight Club. Fincher directed both films.

9. The real Mark Zuckerberg wasn’t a fan of The Social Network.

Andrew Garfield and Jesse Eisenberg in The Social Network (2010). Merrick Morton, Sony Pictures Home Entertainment

The Social Network doesn’t paint Mark Zuckerberg in the most flattering light, and unsurprisingly, the real-life Facebook founder wasn’t happy about it. Following the movie’s release, he called out its “hurtful” inaccuracies, specifically citing the fictional Mara Rooney character that’s used as his motivation for founding the website. But even he admits that some details were spot-on. “It’s interesting what stuff they focused on getting right," Zuckerberg said at a Stanford event. "Like every single fleece and shirt I had in that movie is actually a shirt or fleece that I own.”

10. A sequel to The Social Network is not out of the question.

The Social Network premiered when Facebook was less than a decade old, and the story of the internet giant has only gotten more dramatic since then. Since settling lawsuits with Eduardo Saverin and the Winkelvoss twins, Facebook has been battling scandals related to privacy issues and its influence on the 2016 election. The last 10 years have provided more than enough material for a sequel to The Social Network, and both Aaron Sorkin and Jesse Eisenberg have expressed interest in such a project. As of now, there are no confirmed plans for a follow-up.