This is of particular interest to me. In 2008, I wrote True Enough, a book that argued that digital technology is splitting society into discrete, ideologically like-minded tribes that read, watch, or listen only to news that confirms their own beliefs. I’m not the only one who’s worried about this. Eli Pariser, the former executive director of MoveOn.org, argued in his recent book The Filter Bubble that Web personalization algorithms like Facebook’s News Feed force us to consume a dangerously narrow range of news. The echo chamber was also central to Cass Sunstein’s thesis, in his book Republic.com, that the Web may be incompatible with democracy itself. If we’re all just echoing our friends’ ideas about the world, is society doomed to become ever more polarized and solipsistic?

It turns out we’re not doomed. The new Facebook study is one of the largest and most rigorous investigations into how people receive and react to news. It was led by Eytan Bakshy, who began the work in 2010 when he was finishing his Ph.D. in information studies at the University of Michigan. He is now a researcher on Facebook’s data team, which conducts academic-type studies into how users behave on the teeming network.”