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Continue to ChatExactly 5,126 attempts to make the first bagless vacuum cleaner were failures-some catastrophic disappointments, some minor defects. It took 15 years. Prototype 5,127 was the success ... Failure is painful, but it spurs on improvement like nothing else. - James Dyson from https://whatsmyquote.com/quote/exactly-5-126-attempts-to-make-the-first-bagless-vacuum-cleaner-were-failures-some-catastrophic