Can someone who seems wise still be considered ignorant? What does Chapter 50 say about this situation?

Yes, Chapter 50 explicitly details how a person who appears 'wise' can, in reality, be shrouded in ignorance. This state applies to someone whose mind is fixated on acquiring wealth and luxury and who is perpetually unsatisfied in sense enjoyment. Such a person is described as being constantly preoccupied with thoughts of their wife and sons. According to the text, this individual, deluded by money and family attachments and lacking in devotion, does not truly know their own welfare. Therefore, Chapter 50 concludes that as long as such a person is without devotion, their supposed knowledge is effectively covered by ignorance.