Who better to take on the story of Edward Snowden than cinema-of-paranoia director Oliver Stone? Well, Laura Poitras, who directed the documentary about Snowden, “Citizenfour,” and who is portrayed in this film by Melissa Leo. As is usually the case, the documentary is the better film. But Stone’s narrative version, “Snowden,” is an absorbing version of the story, presenting vitally important issues in an arresting, provocative manner, with some superb moments. It is flawed, as Stone’s “historical” films tend to be, by unnecessary stacking of the deck that detracts from the credibility of the film. Stone does not trust the government, which is fine, but he doesn’t trust his audience, which is distracting. If you are going to make your hero a seeker of Truth, then Hollywood-izing the story is counter-productive.

The movie takes on three big questions, answers one, partially answers another, and turns the third over to us. The first question is: what happened? How did a 29-year-old computer guy get access to what appears to be the entire scope of US intelligence, copy it, and turn it over to reporters? Second, why did he do it? And third, is he a hero or a traitor?

Snowden was an enormously gifted, deeply patriotic young man who was in training for military special forces when an injury forced his return to civilian life. “There are other ways to serve your country,” the doctor crisply advises him. Naming Ayn Rand as one of his influences does not raise any concerns in his battery of entry tests and interviews, including lie detector tests. And so he goes to work for the CIA, NSA, and private contractors for both agencies, gaining access to the information and intrusions into personal data that are being constantly combed and mined for possible terrorist activity. Think of it as the government having Google that searches not just all public material but everything we think of as private: every email, every phone call, every bank account and credit card transaction, even invading your non-digital, analog world, including your home. According to this film, the government can spy on you Big Brother style via your webcam, even if the indicator light is off. I will wait here while you go get a Band-Aid to cover it up right now.

A combination of consciousness-raising from his left-leaning girlfriend (Shailene Woodley), horrifying discoveries of 4th Amendment violations, disturbing revelations about the military-industrial complex (from Nicolas Cage!), and disappointment in President Obama’s failure to curb these abuses leads Snowden to decide to go public. Briefly touched on are some other possible factors: the abuse of Tom Drake, who tried to raise these questions through official channels, and, possibly, some psychological or cognitive disturbance resulting from the onset of epilepsy and the drug used to treat it, or from the level of work-related stress that may have triggered the seizures. There is one “Beautiful Mind”-style scene where Snowden’s CIA boss (Rhys Ifans) speaks to him via a Skype-ish video conference, with a looming, room-size head along the lines of the Wizard of Oz. It is not clear whether this is Snowden’s subjective viewpoint or intended to be a realistic portrayal, but the conversation is, even within the framework of this film about massive intrusions into private lives of citizens with no suggestion of any inappropriate activity, preposterously paranoic.

All of this would be so much easier to take if Snowden was not heroic and brilliant every single moment. Given 5-8 hours to complete a programming test at the beginning of his tenure at the CIA, he finishes in under 40 minutes (38, he corrects his instructor), and everywhere he goes, he blows everyone away with his mad skills. As he zippily downloads the files he plans to turn over to the press (in real life it took months, not minutes), colleagues knowingly nod their approval, hard to understand given his insistence that he was careful to make it clear that he alone was responsible for the breach. Gordon-Levitt is, as ever, an enormously talented actor, but he is playing something of a cipher, a person with low affect. The endlessly skilled Melissa Leo is playing a tough and savvy journalist but as written she has little to do but gaze adoringly as she points her camera. The standouts in the cast are two of the most versatile and talented young actors working on film today: Ben Schnetzer and Lakeith Lee Stanfield as two of Snowden’s colleagues. In their brief screen time, each of them creates vivid, three-dimensional characters we instantly connect to more than we do to any of the main characters.

No matter where we place the balancing point between national security and individual freedom, we can all agree that the decisions should not be made unilaterally by individuals in their 20’s like Edward Snowden and Chelsea Manning. Snowden says he is hoping to start a conversation. I hope that the conversations about this film will be less about its failings and more about what we should do to make sure the next Snowden does not decide to take this step.

Parents should know that this film has very strong language, sexual references and situations and some nudity, tense and perilous situations, and issues of betrayal.

Family discussion: Is Snowden a hero or a traitor? What would you have done if you discovered the level of government surveillance? Who should decide and how much should be disclosed?

If you like this, try: “Zero Days” and “Citizenfour”