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你有没有想过，为什么在科技领域的每个表单、教程或演示账户中，都会使用“约翰·杜”（John Doe）这个名字？这个故事可以追溯到中世纪的英格兰。在1300年代，英国法院有一种奇特的法律手段。当律师需要测试一个案件或提交涉及身份不明的人的索赔时，他们会使用虚构的名字。最常见的名字是“约翰·杜”和“理查德·罗”（Richard Roe）。他们从来不是实际存在的人，只是“某个人”的占位符。几个世纪后，法律系统仍然在使用这些名字，尤其是在一个人的身份不明时。医院用它来指代身份不明的患者，警方报告则用它来指代未知的嫌疑人。然后，科技界借用了这个想法。当开发者需要一个安全、中立的名字用于表单、文档和测试账户的示例时，他们采用了法律界使用了数百年的同样占位符。这就是为什么在几乎每个注册表单中你都会看到：姓名：约翰·杜一个有700年历史的法律传统，悄然存在于现代软件中。有趣的是，最古老的传统最终出现在最新的软件中。

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Ever wondered why every form, tutorial, or demo account in tech is named John Doe?The story goes back to medieval England.In the 1300s, English courts had a strange legal trick. When lawyers needed to test a case or file a claim involving someone whose identity was unknown, they used fictional names. The most common ones were John Doe and Richard Roe.They were never real people just placeholders for "someone."Centuries later the legal system kept using them, especially when the identity of a person was unknown. Hospitals used it for unidentified patients, police reports used it for unknown suspects.Then tech borrowed the idea.When developers needed a safe, neutral name for examples in forms, documentation, and test accounts, they adopted the same placeholder the legal world had used for hundreds of years.That's why in almost every signup form you'll see: Name: John DoeA 700-year-old legal tradition quietly living inside modern software.Funny how the oldest traditions end up inside the newest software

为什么每个模拟账户都叫约翰·杜（一个有700年历史的原因）