Can you explain the core distinction between Shreya and Preya as described in Chapter 17 of Sai Satcharitra?

Chapter 17 of the Sai Satcharitra explains that Shreya, the path of salvation, and Preya, the path of worldly joy, are as opposite as light and darkness. Shreya is defined as the form of discrimination and pure knowledge (Vidya), leading one towards their true self-interest. In stark contrast, Preya is described as the form of ignorance (Avidya) and a lack of discrimination. The chapter states that an individual whose mind runs toward Preya ultimately falls away from their true path, whereas the wise are never deluded by it and consistently choose Shreya.