1 Estelle Rigault and Joseph Garcin are characters in Jean-Paul Sartre’s 1944 existentialist French play No Exit. It is a depiction of the afterlife in which three deceased characters are punished by being locked into a room together for eternity, and is the source of Sartre’s most famous quotation, l’enfer, c’est les autres (“Hell is other people”).
2 The character of the valet in Sartre’s No Exit is distinguished by the fact that he has no eyelids.
3 Life, the Universe and Everything is the third book in the five-volume Hitchhiker’s Guide to the Galaxy science fiction series by British writer Douglas Adams.
4 “Kapoosta” is coal country slang for money.
5 In Frank Herbert’s Dune, the spice Melange is the most valuable substance in the universe. The Navigators of the Spacing Guild depend upon Melange for the heightened awareness and the prescient ability to see safe paths through space-time, allowing them to navigate the gigantic Guild heighliners between planets. The Navigators must exist within a cloud of spice gas in a tank; this intense and extended exposure mutates their bodies over time.