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Not really a joke. The threshold is much lower than you might think. It’s much cheaper to simply build and try out even fairly simple things than to model them accurately enough in expensive software to try out.
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It's also perhaps related that hardware development / production hasn't really got much faster over time. The Model T factory was built/tooled-up in 3 years and each car took 90 minutes of total assembly time. 100 years later, a new F-150 takes 5 years, 180 minutes.
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