The New Yorker’s Evan Osnos profiles Mark Zuckerberg at a time when Facebook is believed by some to be facilitating the decline of Western civilization. “Zuckerberg is now at the center of a full-fledged debate about the moral character of Silicon Valley and the conscience of its leaders,” Oznos writes. “And the question Mark Zuckerberg is dealing with is: Should my company be the arbiter of truth and decency for two billion people? Nobody in the history of technology has dealt with that.”