 From KERA in Dallas, this is Think. I'm Chris Boyd. What showrunners prefer to call unscripted programming is everywhere these days. And although the demise of the genre has been predicted for something like 80 years now, this dirty documentary format is likely to be a permanent fixture in our media landscape. Emily Nussbaum is staff writer at The New Yorker and author of the book Cue the Sun, The Invention of Reality TV.