If designers make faulty assumptions about what a persona can do, they may design a product that such a person could not actually use.

如果设计人员对角色所做的事情有不完善的设想，那么他们可能会设计出那种人不能实际使用的产品。

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Yet a faulty transmission system has already delayed production for a year – Mr Musk blames a design decision by the first CEO, who left under a cloud late last year.

然而，有缺陷的传动系统已经使生产推迟了一年，马斯克将其归咎为第一任首席执行官的设计决策——这位首席执行官在去年底黯然离任。

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Bridging the gap between requirements and code with a design model is critical; it catches mistakes and faulty assumptions long before development and testing.

使用设计模型来连接在需求和代码之间的鸿沟是重要的；设计模型可以在开发和测试之前很久捕获错误和有问题的假设。

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But the immediate cause of the flooding was the failure of floodwalls and levees that were guaranteed to withstand a Katrina-sized storm surge, but failed thanks to faulty design and construction by the Army Corps of Engineers.

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Keith Hayward, head of research at the Royal Aeronautical Society, said that if the issue is no longer about replacing a faulty battery, it raised the prospect of Boeing having to do a major re-design.

BBC: Dreamliner: No fault found with Boeing 787 battery

Faulty blowout preventers, errors in the management of drilling fluids, a sub-par cementing job, questionable well design, haste it was a confluence of these factors that led to the blowout.

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