How does Chapter 17 describe the role of the Guru and the challenges posed by ignorance (Avidya)?

According to Chapter 17, the path of Preya is the path of pure ignorance (Avidya), which deludes the dull-witted who are caught in the cycle of worldly attachments. This ignorance is compared to a mirage or seeing silver in a shell. Overcoming this is difficult, and the chapter highlights the crucial role of the Guru in this process. It states that the Guru can show the way to a place where even the intellect and the Vedas cannot reach. This guidance is essential because, as Chapter 17 explains, a person wallowing in sinful deeds, even if 'learned,' lacks the true discrimination to know right from wrong, making the Guru's hand indispensable.