When you close yourself off from the world, you close your understanding of things that it presents to you. For example, your hearing. When you’re wearing headphones and you can’t hear anything outside, the world is empty of sound. There is no real understanding of it, and whatever is said can be manipulated and distorted beyond normal recognition. There is no explanation for the silence, nothing except what we make of it. The same goes for our other senses, each with their own way of understanding the world around us. Each, working together, brings a truly remarkable understanding of one’s self.