Chapter 51 distinguishes between 'attaining knowledge' and the 'destruction of delusion.' Based on the text, can you explain this nuanced spiritual concept?

Chapter 51 presents a nuanced spiritual insight by differentiating the destruction of delusion from the attainment of knowledge, using a key moment from the Bhagavad Gita. The text highlights that Shri Krishna asked Arjuna if his delusion was destroyed, not if he had gained knowledge. Arjuna's reply, 'My delusion has vanished,' reinforces this point. As Chapter 51 clarifies, delusion, or 'moha,' is synonymous with ignorance. The core idea is that the ultimate spiritual goal is not the intellectual accumulation of facts or doctrines, but rather the complete removal of the ignorance that obstructs one's true perception of reality. This eradication of delusion is presented as the true form of liberation and spiritual progress.