In Episode 114, we re-examine one of our earlier episodes that covered Trist & Bamforth’s study on the longwall method of coal-getting (Episode 34) is the most referenced of any episode we have released. In this introductory segment, Pedro & Tom take a retrospective look at the episode, why it was included in the program back in 2017, and why it continued to come up in conversation over and over again in the seven years since.