“South of the Slot” explores two forms of duality. The conflicting elements of human nature are illustrated through the depiction of Freddie Drummond and his alter ego, Bill Totts. At the same time, the story underscores the stark contrasts and tensions present in early 20th-century San Francisco, highlighting the dichotomy between the affluent elite and the working-class residents of the city.

The story presents opposing personas in one body in the characterization of Freddie Drummond and Bill Totts. Freddie represents upper-class privilege and academic intellect. By contrast, Bill embodies the working-class manual laborer and has a more instinctive, direct approach to life. The dual nature of Freddie’s identity is geographically explored in his movement from north of the Slot to south. As he grapples with conflicting ideologies, Freddie shifts from the academic, theoretical world to the practical, experiential realm of the working class. The warring traits of Freddie and Bill are presented as a battle between restraint and freedom. In his life as an academic, Freddie epitomizes upper-class civilized behavior. He has no vices, displays no emotion, and writes the conservative academic material expected of him.