Watching Return 0 and 6741 the other day, gives me such a POI rush after its been a while since the show ended. Both episodes are still tied for my favorite POI episode all time.
Certain concepts from Vonnegut's work made it's way into the show eventually, especially in Season 5. The concept of being 'Unstuck in Time' that The Machine did in SNAFU is inspired by the author's Slaughterhouse Five (and to an extent, Timequake, though that came much later). And of course, the Ice-9 virus (which is named after a device from the novel Cat's Cradle; which is narrated by a man named 'Jonah' , & is looking to be adapted by Noah Hawley as a miniseries for FX).According to Nolan, part of the inspiration for the series came from a literary concept used by Kurt Vonnegut. “We took that idea from a Vonnegut book The Sirens of Titan, which has an organization in it called the Army of Mars, which is actually secretly led by privates and the lowest on the totem pole,” he said. “I just thought that inverted power structure is an obvious and interesting and important as a way for someone to be present for all of the important goings-on and keep track of things.”
Jonah also utilized the automated piano in Westworld, which he cited was inspired by Vonnegut's Player Piano (his debut novel).