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
The arbitrariness of the sign A key difference between verbal language and the modernist ideal of a visual “language” is the arbitrariness of a verbal sign, which has no natural, inherent relationship to the concept it represents. The sound of the word “horse”, for example, does not innately resemble the concept of a horse. Ferdinand de Saussure called this arbitrariness the fundamental feature of the verbal sign. The meaning of a sign is generated by its relationship to other signs in the language: the sign’s legibility lies in its difference from other signs. Ellen Lupton & J. Abbott Miller, The ABC's of ▲■●: The Bauhaus and Design Theory Gods of the Word soundmeaninglanguage