Chapter 50 suggests a 'wise' person can still be ignorant. What are the characteristics of such a person, and why is their knowledge considered ignorance?

Chapter 50 provides a practical definition of a person who may seem wise but is actually living in ignorance. Such an individual is one whose mind is fixed on wealth and luxury, who is unsatisfied in sense enjoyment, and who is constantly preoccupied with thoughts of their wife and sons. The text states that this person, deluded by money, children, and wife, does not know their own welfare even if they are considered 'wise'. Their knowledge is considered to be covered by ignorance as long as they are without devotion, implying that true knowledge requires detachment from worldly attachments and a devotional attitude, not just intellectualism.