Punditry is an industry built on confirmation bias. Rush Limbaugh and Keith Olbermann, Glenn Beck and Arianna Huffington, Rachel Maddow and Ann Coulter—these people provide fuel for beliefs, they pre-filter the world to match existing worldviews. If their filter is like your filter, you love them. If it isn’t, you hate them. You watch them not for information, but for confirmation. Be careful. People like to be told what they already know.
Remember that. They get uncomfortable when you tell them new things. New things . . . well, new things aren’t what they expect. They like to know that, say, a dog will bite a man. That is what dogs do. They don’t want to know that man bites a dog, because the world is not supposed to happen like that.
In short, what people think they want is news, but what they really crave is olds . . . Not news but olds, telling people that what they think they already know is true.
—Terry Pratchett quote from his character Lord Vetinari in his comic fantasy book series Discworld