Abstract
This chapter addresses the human perceptual context in which we are working, especially the human tendency to see smoothness, stability, and continuity in the natural world—even when they are absent. What is typically called “truth” means agreement with human perception of reality. But that is not absolute; it changes with time, with people, and with paradigms. A lot depends on perceptions. Human perception capabilities, however, have significant limitations. Some of those limitations are discussed and described here. Although discontinuity and roughness are pervasive in nature, humans often do not see it. The human perceptual preference for smoothness—while ignoring roughness—is explored and examined in the chapter. Human “smoothing effects” can be observed in both spatial scales and temporal scales. Two supporting analyses that investigate the relationships between scale and perception are provided. The preference for smoothness extends into our modeling activities. Most of our system models “smooth” reality in some way.
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