The Dangerous Mr. Khan

In The Wall Street Journal, Paul Boutin writes, “As we become increasingly dependent on the Internet for our view of the world, and as the Internet becomes more and more fine-tuned to show us only what we like, the would-be information superhighway risks becoming a land of cul-de-sacs, with each of its users living in an individualized bubble created by automated filters—of which the user is barely aware.” 
via nas.org