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The knowledge was not lost. It was embodied in a machine. What is lost is our connection to the materials and that is sad and profound.
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In our A.I. robot future, we might be further from the manufacturing than our ancestors could have imagined.
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Manufacturing
Damascus steel was non-trivial.The knowledge domain has shifted, the people who made the steam engine would be lost trying to generate a
STL file from G-code.
It's less than 200 years since the first photograph, and photolithography is used to make things invisible to the naked eye. Currently in the 10s of nanometer range.
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Originally Posted by Wikipedia
During development, Lathrop and Nall were successful in creating a 2D miniaturized hybrid integrated circuit with transistors using this technique.[3] In 1958, during the IRE Professional Group on Electron Devices (PGED) conference in Washington, D.C., they presented the first paper to describe the fabrication of transistors using photographic techniques and coined the term “photolithography” to describe the process, marking the first published use of the term to describe semiconductor device patterning.
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