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
Upstream, Downstream To truly increase innovation, I think we need policies focused on what goes on even further upstream, before much of the supply of new inventors is inevitably siphoned off into distractions, dead ends, and failure. Most policies inevitably have a marginal effect, but a slight expansion of the incoming swell of potential inventors can have a much greater impact than fiddling with the incentives of the few hundred who’ve already somewhat made it to the final trickle. Increase the strength of the flow upstream, and everything downstream flows the faster too. Anton Howes, Age of Invention antonhowes.substack.com Who Becomes an Inventor in America? The Importance of Exposure to Innovation innovation