he event is billed as a lecture on a new book of social science. But the speaker visiting Cambridge’s Lesley University this Monday night sounds like a political candidate on the hustings. Robert D. Putnam — Harvard political scientist, trumpeter of community revival, consultant to the last four presidents — is on campus to sound an alarm. “What I want to talk to you about,” he tells some 40 students and academics, is “the most important domestic challenge facing our country today. I want to talk about a growing gap between rich kids and poor kids.”
Two decades ago, Putnam shot to fame with “Bowling Alone,” an essay-turned-best-selling-book that amassed reams of data to chart the collapse of American community. His research popularized a concept known as “social capital.” The framework, used in fields like sociology and economics, refers to social networks and the norms of reciprocity and trust they create. “He’s one of the most important social scientists of our time,” says Gary King, director of Harvard’s Institute for Quantitative Social Science, because of his ability to blend scientific rigor with popular appeal.
But tonight Putnam sets the science aside, at least to start. He opens his Cambridge talk with a story. It’s about two young women, Miriam and Mary Sue. Their families, he says, both originally came from the same small Ohio town. Miriam, who had well-educated parents, went off to an ultra-elite East Coast university. Mary Sue, the daughter of high-school graduates who never held a steady job, ended up on a harrowing path of abuse, distrust, and isolation.