Like all my father’s lessons, this one had broad applications beyond our immediate task. Ultimately, it was a lesson in the principle of self-reliance, which my father insisted that America had forgotten sometime between his own childhood and mine. Ours was now a country in which the cost of replacing a broken machine with a newer model was typically lower than the cost of having it fixed by an expert, which itself was typically lower than the cost of sourcing the parts and figuring out how to fix it yourself. This fact alone virtually guaranteed technological tyranny, which was perpetuated
  
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