You see, unlearning is a very important process towards becoming enlightened, because in this life you will have learned wrong ways and those wrong ways that you have learned are barriers blocking you from becoming who you really are, therefore it is vital that they are unlearned.
You can believe what you've been told. You can imagine in vivid detail the things explained to you. You may even feel emotions assumed to accompany the related experience. But you absolutely cannot know something with any real degree of understanding until you've personally walked the road yourself.