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Typo mistakes8/31/2023 ![]() And I don't know what an overbar is, let alone how to use one! Now I know what you're thinking: I'm emailing my boss, not writing an algorithm for NASA. In addition to the monetary cost, NASA's failure damaged the organization's credibility, and the world was forced to wait a bit longer for up-close pictures of Venus. The cost of this typo, when adjusted for inflation, has been estimated to be around $150 million. ![]() Despite the seemingly small size of the overbar, its inclusion in the guidance system's algorithm was essential. In 1962, shortly following its launch, Mariner 1 was destroyed when a mistake in its guidance system's algorithm sent the rocket off course-and directly toward North Atlantic shipping lanes.Īfter Mariner 1's crash, the cause of the faulty algorithm was determined to be a missing overbar, which is a line placed over text. (Mariner 1 was a probe constructed by NASA to take photos of and gather data from Venus.) The world's most expensive typo is generally considered to be a mistake in Mariner 1's guidance system. "History has shown that the destructive potential of a single incorrect character can be staggering."ĭon't believe Fennell? Below are examples of typos, punctuation errors, and misspellings that have had catastrophic effects on individuals, organizations, and governments. ![]() Typos and grammar errors can damage your reputation or even cost you your job.Ĭameron Fennell, a fellow proofreader and copy editor, agrees that typos can be disastrous: Well, that approach might come back to haunt you. Surely a typo here and there doesn't matter in the grand scheme of things, right? Have you ever submitted a business proposal or sent an email without proofreading it? ![]()
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