The class subject is Legend Tripping vs Ghost Investigating.  Legend Tripping focuses on the development and evolution of urban legends. It's a visit to a site having a legend for the purpose to test the legend, the backstory and  describes the practice of venturing to a site believed to be haunted — or where disturbing events have taken place. There's a lot more to it so listen in. With sharing some his personal experiences, you'll find out that there is a big difference between tripping and ghost hunting, and you might want to give it a try yourself.