Human perceptual processing has remarkable properties, the properties that enabled our ancestors to survive. Lucid writing exploits those properties. It makes efficient use of the reader's perceptual machinery. Anyone can use this idea to improve their writing and other communication skills, by taking account of verbal, musical, and visual perceptual phenomena. Such phenomena include unconscious gap-filling and grouping, and the sensitivity to organically-changing patterns.
There are wider aspects. For instance the origin and significance of the arts become clearer from this viewpoint, as well as the origin and significance of science and mathematics and the nature of what we call intuition and creative imagination. The arts, as well as the sciences, reflect a biological reality that explains their profound human importance. That reality includes the way perception works---as an unconscious model-fitting process, an unconscious `science in miniature'---suggesting a simple yet coherent view of science itself, having far-reaching implications for the public understanding of science and, arguably, for future civilization.
