Why do Dr. Albert and the narrator believe that time is the central theme of Tsui Pens novel in Borges's The Garden of Forking Paths?

Dr. Albert and the narrator believe that time is the central theme of Tsui Pen's novel because it explores the idea of multiple timelines and infinite possibilities. This concept of time branching off into different paths mirrors the labyrinthine structure of the narrative in Borges's story, highlighting how choices and consequences shape our perception of time.