Teenage nostalgia is a big ticket right now thanks to the success of Stranger Things. And while Stranger Things is definitely guilty of engaging in nostalgia for nostalgia’s sake, there’s narrative purpose behind it as well. The characters in Stranger Things aren’t just listening to 80s songs – the 1980s permeates every level of that show, from the costumes to the sets to the storylines. The Cold War plays a huge part, as well as pop culture tropes from the time period. Stranger Things isn’t just mimicking Spielberg movies and Stephen King and 1980s science fiction and …