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
168. Connection to the Earth Problem A house feels isolated from the nature around it, unless its floors are interleaved directly with the earth that is around the house. Solution Connect the building to the earth around it by building a series of paths and terraces and steps around the edge. Place them deliberately to make the boundary ambiguous—so that it is impossible to say exactly where the building stops and earth begins. Christopher Alexander, Murray Silverstein & Sara Ishikawa, A Pattern Language Deep Interlock