Nearly 20 years and millions of sales after his nonfiction debut, Mr. Gladwell is at something of a professional tipping point. He elicits from readers the kind of polarized reactions usually reserved for talk-radio hosts. To one camp, he is a master storyteller, pithily translating business concepts and behavioral science to a lay audience. To others, he is a faux intellectual, dressing up ordinary truths (such as an “Outliers” argument that success results from a combination of hard work and opportunity) as counterintuitive genius. How “Talking to Strangers” is received could cement Mr. Gladwell in one of those camps for good. – The New York Times