How does Chapter 32 use the metaphor of the 'tree of worldly existence' to explain the necessity of a Guru's grace?

Chapter 32 emphasizes that true knowledge is impossible without a Guru's grace, stating that even extensive study of scriptures like the Vedas is "mere chaff" without it. To illustrate the predicament from which the Guru offers escape, the text introduces the metaphor of the "tree of worldly existence." As described in Chapter 32, this tree has its roots above and its branches spread immeasurably. It is filled with birth, death, and sorrow, and its nature is perishable. Though it may appear pleasant from a distance, it is full of thorns that pierce anyone who embraces it. This powerful imagery portrays worldly life as a vast, sorrowful, and ultimately transient entanglement, underscoring why the Guru's grace is essential for true knowledge and liberation.