Concerning our use of analogy. We do not bring in imperfect analogy, but we follow the instructions of the Sastras strictly. Our authority is on the basis of Sastra, not analogy. So, Vyasadeva while giving the history of creation says "Janmadyasya . . . adhikavaye" . . . so He impregnated the heart of Brahma with all the designs of creation. So what is wrong there? If I instruct someone you do like this, and he does it, then what is the difficulty? This is the system. Our authority is sastra. We give analogy for the general mass of people who have no faith in sastra. Analogy is not proof; sastra is proof. Foolish people cannot understand or accept, so we use analogy. The conclusion is not drawn from the analogy but from the sastra. We don't use a combination of logic and authority, we use authority. Logic we use to convince someone who doesn't accept the authority. The basic principle is authority. Vedas say that cowdung is pure and we accept it. There is no logic, but when we practically use it we see that it is correct. The logic of using analogy is called in the sastra "sakha candra nyaya." It is easier to focus on the moon through the branches of a tree. The moon is great distance away, and you say that it is just through the branches. So you can focus more easily on the moon because 2 points joined make a straight line. So focusing on the nearby object helps us to focus on the far-away object. This is the use of analogy.
So there is no question of stagnation in Krishna Consciousness. Krishna is unlimited. The more we advance in Krishna Consciousness, the more we understand about Him. We cannot finish the process of understanding Him. The little more that we advance, we see still that He is far away. Even Krishna couldn't understand His position in relationship to Radharani, therefore, He took the position of Radharani to understand Himself as Sri Caitanya Mahaprabhu.
I hope that this meets you in good health.
Your ever well-wisher,
A.C. Bhaktivedanta Swami
ACBS/pks