How can I know if my knowledge is actually ignorance? What are the signs of a deluded person according to this chapter?

Chapter 50 provides clear signs to distinguish true knowledge from ignorance. An attitude of thinking oneself a sinner, unfortunate, or luckless is described as the very "mine of 'Avidya' (ignorance)." Furthermore, a person whose knowledge is merely a form of ignorance is one who is deluded by worldly attachments. This includes being fixated on wealth and luxury, remaining unsatisfied in sense enjoyment, and constantly thinking of wife and sons. The text states that as long as a person is without devotion and entangled in these attachments, their knowledge is covered by ignorance, and they do not know their own welfare, even if they consider themselves 'wise'.