The text mentions that a 'wise' person's knowledge can actually be ignorance. How is this possible?

According to the teachings in Chapter 50, this seeming paradox occurs when a person's focus remains on worldly attachments. Even if someone is considered 'wise', their knowledge is classified as ignorance if they are constantly thinking of and unsatisfied in sense enjoyment, wealth, luxury, wife, and sons. Such a person is described as being 'deluded by money, children, and wife' and does not know their own true welfare. The text states that as long as such a person is without devotion, their knowledge remains covered by ignorance, preventing them from attaining true self-realization.