Chapter 22 uses the analogy of a snake and a rope. Can you explain the meaning behind this metaphor?

In Chapter 22, the snake and rope analogy is used to explain the concepts of illusion, fear, and ultimate reality, all in relation to the Guru. The text suggests that in dim light, a rope can be mistaken for a snake, creating fear. This represents worldly existence and illusion. The Guru is described as the creator of this snake-like tendency, the illusion itself. However, he is also the light, the one who reveals the rope's true form, thereby removing the fear. The chapter states that before this, in total darkness, neither the snake nor the rope existed, and that formless state is also the Guru, highlighting his role as the source, sustainer, and remover of all illusion.