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Updated: May 23, 2025
"It is always so. An inventor has many things to contend against. Remember Ark-wright, and how he was puzzled hopelessly by that trifling error in the thickness of the valves in his spinning machine. He had to give half his profits to Strutt, the local blacksmith, before Strutt would tell him that he had only to chalk his valves! The thickness of a coating of chalk made all the difference.
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