Could you elaborate on the philosophical distinction Chapter 51 makes between 'destruction of delusion' and 'attainment of knowledge'?

Chapter 51 presents a nuanced philosophical point by referencing the dialogue between Krishna and Arjuna. It highlights that Krishna's critical question was about the destruction of Arjuna's delusion (moha), not the attainment of knowledge. Arjuna's affirmative reply, "My delusion has vanished," underscores this focus. As explained in Chapter 51, delusion and ignorance are essentially the same. The teaching implies that the primary spiritual task is to eliminate the root cause, which is ignorance or delusion. The attainment of true knowledge is the natural state that emerges once the obscuring veil of delusion is removed, rather than being a separate thing to be acquired. This subtle but crucial distinction is a key insight offered in this chapter.