Perhaps you can see how easy it is for humans to distort what we perceive. Light reproduces a perfect image of what is real, but we distort the image by creating a story with all those symbols and opinions that we learned. We dream about it with our imagination, and by agreement we think that our dream is the absolute truth, when the real truth is that our dream is a relative truth, a reflection of the truth that is always going to be distorted by all the knowledge we have stored in our memory.
