Rosen begins by citing a chart from the 1986 book, The Uncensored War, by Daniel Hallin, which defined the three categories of arguments which the media defined during the Vietnam War: (1) those within the “Sphere of Consensus” (ideas deemed so plainly true that they required no debate or examination); (2) those within the “Sphere of Legitimate Controversy” (ideas deemed reasonable enough to be debated and disputed within mainstream discussion); and (3) those within the “Sphere of Deviance” (ideas so plainly wrong, radical and fringe that they deserved no hearing at all)