That's an interesting question, the question then becomes do people who like A because it conforms to their worldview like A because they where fed A and B beca

That's an interesting question, the question then becomes do people who like A because it conforms to their worldview like A because they where fed A and B because they where fed B or to put it another way have their views been shifted over time by the news they consume. > 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 a 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 - Lord Vetinari (Terry Pratchett - The Truth).