We know everything there is to know, therefore we don't need to learn. Learning is only needed when there is something we never know before. But we choose to forget, so we can re-create ourself anew. We cannot not be who we are, so the next best thing we can do is to forget who we are, therefore making it possible to create the next grandest version of the greaster vision we ever held about who we are. One example is when you look deeply into a baby's eyes and feel that you are seeing an "old soul'. People who are brain dead or memtally retarded are here for a reason, we might not be able to comprehend that reason, but one thing we can remember from them is who we are, because they provide us with a frame of reference. In the absence of the less intelligent, intelligent means nothing. etc.