Since Zadie Smith published her début novel, “White Teeth,” twenty-five years ago, she has been a bold and original voice in literature. But those who aren’t familiar with Smith’s work outside of fiction are missing out. As an essayist, in The New Yorker and other publications, Smith writes with great nuance about culture, technology, gentrification, politics; “There’s really not a topic that wouldn’t benefit from her insight,” David Remnick says. He spoke with Smith about her new collection of essays, “Dead and Alive.” “The one thing about talking about essays,” she notes, ruefully, “is you find yourself saying the same thing, but worse—without the commas.” One of the concerns in the book is the role of our devices, and social media in particular, in shaping our thoughts and our political discourse. “Everybody has a different emphasis on [Donald] Trump and what’s going on. My emphasis has been on, to put it baldly, mind control. I think what’s been interesting about the manipulations of a digital age is that it is absolutely natural and normal for people to be offended at the idea that they are being manipulated. None of us like to feel that way. And I think we wasted about—whatever it’s been since the invention of the Iphone—trying to bat away that idea, calling it a moral panic, blaming each other, [and] talking about it as if it were an individual act of will.” In fact, she notes, “we are all being manipulated. Me, too. . . . Once we can all admit that, on the left and the right, then we can direct our attention to who’s been doing this and to what advantage.”  New episodes of The New Yorker Radio Hour drop every Tuesday and Friday. Join host David Remnick as he discusses the latest in politics, news, and current events in conversation with political leaders, newsmakers, innovators, New Yorker staff writers, authors, actors, and musicians.