What is the difference between 'Vidya' and 'Avidya' as described in Chapter 50?

Chapter 50 draws a clear distinction between 'Vidya' (knowledge) and 'Avidya' (ignorance). It defines 'Vidya' as the pure, eternal realization that "I am Brahman," the conscious, blissful, and liberated Soul. This understanding leads to liberation from bondage. In stark contrast, 'Avidya' is described as the negative self-perception or attitude of thinking, "I am a sinner, unfortunate, luckless." This mindset is called the "mine of 'Avidya'" and is one of the ancient powers of Maya that results in the state of bondage for the soul.