One of the most popular ways to appreciate the complexity of our perceptual processing is to view optical illusions. These yield surprising results and are completely unobtrusive. Each one is designed to reveal some shortcoming of our visual system by providing a stimulus that is not quite consistent with ordinary stimuli in our everyday lives. Figure 2.16 shows two. These should motivate you to appreciate the amount of work that our sense organs and neural structures are doing to fill in missing details and make interpretations based on the context of our life experiences and existing biological structures. Interfering with these without understanding them is not wise!
Steven M LaValle 2016-12-31