It's much easier to get worldly facts like this right, which mostly come from multiple news agencies anyway In a nutshell, I'm not so sure that the effect real

It's much easier to get worldly facts like this right, which mostly come from multiple news agencies anyway In a nutshell, I'm not so sure that the effect really exists in any significant way. In the case of "worldly facts" news, the really significant part is often the emotional impression of the text. The way this plays out in physics/science, world news, and politics are all going to be somewhat different. It results in factual errors more often in science news, which often amounts to making people feel like they're informed, but the emotional games played in more political news are different. (The exceptions are climate science and evolution, where the topics are more politicized and the emotional games are more political.)