What do optical illusions relate to?
Optical illusions relate to perception, and how your brain percepts the picture that you see. Optical illusions also relate to shape consistency. For instance, if you look at any doorframe you can see that it is rectangular. But if you were to sketch the outline of the doorframe from the angle that you are looking at it, most likely you would sketch a trapezoid. Your mind adjusts the door so that you perceive it as a rectangle from whatever angle you look at it. Other Questions: Does everyone have the same optical illusions? Do we see optical illusions with out noticing? How do optical illusions trick the human eye?
