Daniel Trielli and Nicholas Diakopoulos are the authors of this article. Daniel Trielli is a journalist and a PhD student working at the intersection of data journalism and algorithmic accountability reporting. You can follow him on Twitter @DanielTrielli. Nicholas Diakopoulos is an assistant professor of journalism at the University of Maryland and a fellow at the Tow Center for Digital Journalism. You can follow him on Twitter @ndiakopoulos.