Scientific progressScientific progress isIntangible slowedUnthinkable down by the human tendency to disregard the intangiblesIntangible, which are relegated to the unthinkableUnthinkable (Chap. 14 ). What are intangiblesIntangible? In LatinLatin, intangibleIntangible means something that cannot be touched and grasped. Yet, our movementMovement is set in motionMotion by intangiblesIntangible: perceptionsPerceptions, feelingsFeelings, hungerHunger, beautyBeauty, contrastContrast, envyEnvy, and emotionsEmotions. IntangiblesIntangible enable us to thinkThink, Thinkers and questionQuestion what is overlooked, for example, why people build firesFire shaped the same way, why the roofsRoof are shaped the same way, and why celestialCelestial bodies are not of one sizeSize. Many more examples of the natural birthBirth of diversityDiversity underpin the narrative: snowflakesSnowflake, celestialCelestial filaments and spider webs, riverRiver basin architectureArchitecture, and dendritic dust aggregates.