Can you explain the snake and rope metaphor used in Chapter 22 to describe the Sadguru's nature?

In Chapter 22, the text employs a classic metaphor to illustrate the Sadguru's role in perception and reality. It describes how in dim light, a rope can be mistaken for a snake, creating fear. The 'snake' represents illusion and worldly existence, while the 'rope' represents the underlying reality. The chapter explains that the Sadguru, Sai Baba, is the master of both. He is the 'creator of the snake-like tendency' (the illusion) and also the one who reveals its true form as a rope, thereby removing the fear. As stated in the verses from Chapter 22, the Sadguru is the cause of the illusion and ultimately the one who dispels it, guiding the devotee from the darkness of ignorance to the light of true knowledge. Before the illusion, in 'total darkness,' there was neither snake nor rope, only the formless reality, which is also identified with the Sadguru.