Farewell to Person of Interest, one of the best shows about spy tech ever made

CBS

Reese and Finch puzzle out a problem, with help from the Machine.

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It's rare for a television series about technology to get anything right about how computers work, let alone how hackers do their jobs. But in a pop culture landscape flooded with shows like CSI: Cyber and Scorpion, the CBS show Person of Interest stood out as smart, relevant, and mostly clueful about how networked devices actually function. Last night marked the final episode in its five-year run, ending a plot arc about the birth of two artificial intelligences, the ethical Machine and the ruthless Samaritan. Audiences were left with a vision of an ambiguous new future, where we can't just put our powerful new surveillance and machine learning technologies back in the box. We have to figure out how to make them tools for justice rather than tools for conformity and oppression.

When Person of Interest first started in 2011, it focused mostly on corruption in the NYPD and the nebulous "intelligence community" that trained super-ninja character Reese-and then burned him, badly. Living on the streets, half-mad with PTSD, Reese (Jim Caviezel) is rescued by a mysterious, wealthy hacker named Finch (Michael Emerson). In the darkened stacks of an abandoned library, Finch has set up a high-tech surveillance operation designed to save the lives of "ordinary people" the government "doesn't care about."

Finch's only companion, other than Reese, is a mysterious AI he built called the Machine. Locked behind government firewalls, the Machine has one backdoor for communicating with Finch: when its predictive algorithms determine someone is about to experience violence, as a victim or perpetrator, the Machine transmits that person's social security number to Finch via payphone. During the first season, Finch and Reese team up with NYPD detectives Carter (Taraji Henson) and Fusco (Kevin Chapman) to stop that violence wherever they can. Carter, who is former military, is willing to help them because she still believes in making the world safer. Fusco is such a dirty cop that he's vulnerable to blackmail. This ragtag gang of idealists and cynics somehow comes together to form one of the most memorable crime-fighting teams in recent TV history. Their secret weapon is always the Machine, whose sensorium is made up of every surveillance device in the country and whose mind encompasses every form of personal data you could possibly imagine.

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