Can you explain the comparison between a wise person and a dull-witted person as presented in Chapter 17's discussion of Shreya and Preya?

Chapter 17 of the Sai Satcharitra draws a clear distinction between the wise and the dull-witted based on their relationship with Shreya and Preya. The wise, described as courageous and intelligent, are like swans who can separate milk from water; they cling only to Shreya (the path of salvation) and turn away from worldly joys. In contrast, the dull-witted are conquered by Preya. The chapter notes they get caught in the cycle of maintaining their body, children, and wealth, pursuing only what is pleasant. Even when both paths are presented, a dull person without discrimination is incapable of making the right choice.