Can you explain the philosophical analogy of the rope and the snake used at the beginning of Chapter 22 to describe the Sadguru's nature?

Chapter 22 opens with a deep philosophical analogy to illustrate the Sadguru's role in illusion and reality. It compares a rope mistaken for a snake in dim light to worldly illusion. The chapter explains that the Sadguru is both the creator of the illusion (the "snake-like tendency") and the one who removes the resulting fear by revealing the truth (the "form of a rope"). It goes further to state that in the preceding "total darkness," where neither the rope nor the snake existed, that formless state is also the Sadguru. This signifies that the Guru is the source of illusion, the remover of it, and the ultimate formless reality beyond all perception.