IT IS strange that the Obama administration has so avidly continued many of the national-security policies that the George W. Bush administration endorsed. The White House has sidelined the key recommendations of its own advisers about how to curtail the overreach of the National Security Agency (NSA). It has failed to prosecute those responsible for ...

In a 2009 book about the social consequences of the Internet, The Age of the Infovore, the economist and blogger Tyler Cowen argues that new technologies enable us to decide what information to consume and, as a result, to remake ourselves. Instead of reading the same newspaper or watching the same television news, we can ...