Can you elaborate on the distinction between 'destruction of delusion' and 'attainment of knowledge' as presented in Chapter 51?

Chapter 51 makes a subtle yet profound distinction by analyzing a dialogue from the Bhagavad Gita. It highlights that Shri Krishna asked Arjuna if his delusion (moha) was destroyed, not if knowledge was attained. Arjuna's reply, "My delusion has vanished," is presented as the ideal outcome. The author of Chapter 51 explains that delusion is merely another name for ignorance. The core teaching here is that spiritual progress is less about acquiring knowledge as an external commodity and more about the removal of an internal obstacle—ignorance. Once the delusion is gone, knowledge, which is already inherent, can manifest unimpeded. This perspective shifts the focus from accumulation to purification.