Scrolling through the average Facebook feed is often a baffling experience. Why, for instance, did that aunt's friend decide now was a good time repost an article about Pizzagate? And why, for a hot second a couple years ago, did it seem as if every single friend from college was posting the inexplicably popular BuzzFeed quiz, "What Country Do You Actually Belong In?" While a pair of new studies doesn't provide answers to these exact questions, they do examine and analyze what goes on in our bra...