The true-story-based 21 comes off as an extremely interesting, though likely unintended concept: a gangster/crime film for nerds. In structure, it’s basically Little Caesar set in the world of card counting, which in fact isn’t illegal, yet in Vegas is viewed as being just as criminal as bootlegging was during Prohibition. There are a number of moments that exactly fit the mold of the crime genre and some moments that even seem specific to individual films (a short scenario involving new identities feels like a wink at a similar scene in Reservoir Dogs if you’re already thinking about gangster movies). But as interesting as the concept sounds, nerds just aren’t as entertaining as gangsters and blackjack and brains just isn’t as cool on screen as bank robberies and machine guns.
Coinciding with the crime genre structure are the conventions of the geek-gets-popular genre (I guess as social climbing stories, they’re basically the same thing). The story centers on an MIT student (Jim Sturges) who works on robotics in his spare time with his nerdy friends. He’s recruited into a group of mathletes, headed by a behind-the-scenes professor (Kevin Spacey), who spend their weekends in Las Vegas getting filthy rich by counting cards at blackjack tables and playing accordingly. Like Lindsay Lohan in Mean Girls or Edward G. Robinson in Little Caesar, the popularity and power takes control over the new recruit. But it’s a weird twist, because here the popular kids are actually ubernerds, which is fitting in the world dominated by Bill Gateses and Steve Jobses.