In reference to the mentioned article https://www.scientificamerican.com/article/information-overload-helps-fake-news-spread-and-social-media-knows-it/ https:/

In reference to the mentioned article https://www.scientificamerican.com/article/information-overload-helps-fake-news-spread-and-social-media-knows-it/ https://www.scientificamerican.com/article/information-overl... I can't determine what this article means by "quality", is it gauged by validity or some subjective notion? If it's the latter, I'm not sure how any of this is useful.