Reported in How the Internet is Loosening Our Grip on the Truth. (The New York Times, 11/2/2016)
A wider variety of news sources was supposed to be the bulwark of a rational age — “the marketplace of ideas,” the boosters called it. But that’s not how any of this works. Psychologists and other social scientists have repeatedly shown that when confronted with diverse information choices, people rarely act like rational, civic-minded automatons.
Instead, we are roiled by preconceptions and biases, and we usually do what feels easiest — we gorge on information that confirms our ideas, and we shun what does not.