Last week, researchers who work for Facebook released a study titled “Exposure to
ideologically diverse news and opinion on Facebook.” It was about a crucial topic: Does the
increasing role of algorithms of personalization and “engagement” on online platforms end
up filtering out viewpoints that are different than our own? The study, published in Science,
generated a flurry of media coverage with headlines such as “Facebook Echo Chamber Isn't
Facebook's Fault, Says Facebook”(Wired),“Facebook says its algorithms aren't responsible …