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
21. Four-Story Limit Problem There is abundant evidence to show that high buildings make people crazy. Solution In any urban area, no matter how dense, keep the majority of buildings four stories high or less. It is possible that certain buildings should exceed this limit, but they should never be buildings for human habitation. Christopher Alexander, Murray Silverstein & Sara Ishikawa, A Pattern Language In every skyscraperIt begins with a trip down the stairsLow wooden silhouettesSkyscrapers are frowned upon citiesurbanismhome