Safety cut rope axe man In the first nuclear reactor, constructed by Enrico Fermi in 1942 under the bleachers of the University of Chicago football stadium, the control rods were held up by a manila rope. A man with an axe was told to cut the rope if the reactor got out of hand. This "safety cut rope axe man" is supposedly the origin of the term SCRAM for an emergency shutdown procedure. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape wordsacronymsenergy
By the handling of human hands This type of beauty grows with each passing day. Utilitarian craftwares become more beautiful the more they are used, and the more beautiful they become, the more they are used. Moreover, the heavens have ordained that these objects should attain an even greater beauty as they become worn by the handling of human hands. Yanagi Sōetsu, The Beauty of Miscellaneous Things Putting Thought Into Things utility