It seems that there is more to sight than meets the eye and more to the I than sight. What is real and what is an illusion?
Yes, I know I sound like a mystic beginning to surround whatever it is I'm going to say with the mists of mysticism, as even a fool will sometimes be thought wise if he makes a few riddles out of answers. But I'm not about to say anything other than that there are some mists in day to day "real life" that are mysterious indeed. After all, everything we see is veiled in our own misty perceptions, with our brains constantly blurring, filling in blind spots, painting and processing the electrical signals we send into it for us to see.
Try looking at this example to see what you think of how your brain works.