I've recently found the home-page of James Gleick, who wrote quite an appealing popular science book about chaos theory and the people behind it. He's good on the experience of being a beta tester for an early version Microsoft Word, but I don't think much of his piece on the Ariane 5 crash, which ends with the feeble line:
Fortunately, he points out, really important software has a reliability of 99.9999999 percent. At least, until it doesn't.
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