By John Keegan and Edmund Boys
“Person of Interest” returns from its triumphant freshman season with some urgent business still at hand, Root’s abduction of Finch. But, first, we need to spend some time getting to know the newest cast member, freshly promoted from its behind-the-scenes supporting role, the Machine itself. Using the show’s signature blend of flashbacks and present-day procedural, it soon becomes clear that Finch has indeed created the first artificial intelligence. It is equally clear that, at best, it has reached the stage of petulant adolescent. Given that still malleable state, the implications of what might happen if Root does liberate it are truly chilling.