Routine design When we think of bridges, it is the dramatic and monumental long spans that come to mind first, especially the lithe suspension bridges such as the Golden Gate and the pure geometric arches such as Sydney Harbour. But the majority of bridges are not such spectacular structures. Most of them are ordinary overpasses, with spans of 30 or 40 feet, carrying roadways or rails across other thoroughfares or over small streams. You see such bridges by the dozen on any drive down the Interstate. They may be lacking in glamour, but they are more representative of a bridge builder's art. The engineering and construction of girder bridges are pretty routine these days, but the bridges are not quite standard items you order from a catalogue. The girders, whether of steel or concrete, are custom-build for each bridge, then trucked to the site and hoisted into place with a crane. The designer still has scope for variation and creativity, and it shows out on the highways: some overpasses are prettier than others. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape engineeringdesignautomationroutine
Small economies I refer to small money-earning business that consist of the work of a visible individual, or have evolved from a personal hobby or skill, as "small economies". We can include in this category newer forms of at-home work—side businesses, telecommuting and the like. The amount of income is unimportant; meager profits are compensated for by the motivation of the owner. A small economy may or may not be someone's main form of livelihood, but it is always a spontaneously conceived and continuing activity. Toshiharu Naka, Two Cycles All-use environments economics