NetflixVENICE, Italy—In 1988, Nicholson Baker’s novel The Mezzanine caused a stir with its ironic, witty rendering of the everyday thoughts of a young office worker, in all their mundanity: Over the course of the book, Howie disserts on paper straws, escalators, and popcorn. Over the course of the ’90s, Seinfeld would take that idea and run with it, digging deep down into the quotidian lives of its characters and their menial preoccupations.David Fincher’s new film, The Killer, premiered Sunday