A screen that says saved屏幕上说保存了and a record that is saved和真的存进去了are two different things.是两件事。

The most expensive sentence in a factory is "this is simple". People who admit they do not understand are rare; people who are certain they already do are everywhere. So the hard part was never the feature list - it was finding out what actually happens today.工厂里最贵的一句话是「这个很简单」。说「我不懂」的人很少，笃定自己已经懂的人到处都是。所以难的一直不是功能清单，而是搞清楚今天到底是怎么干的。

That is why these tools all start from one action that happens every day - filing a defect, quoting a job, looking something up in your own notes - and then ask a single question: when this goes wrong, can the person holding it tell?所以这些工具都从一个每天必须发生的动作开始——提报一个不合格、报一次价、在自己的笔记里查一件事——然后只问一个问题：它出错的时候，拿着它的人能不能看出来？

A shipping form is not saved until it is reopened and found. A download is not done until the bytes are on disk. A search result is not an answer until the evidence is actually there. Three unrelated projects, one rule.发货单说保存了，不算保存，得重开查得到才算；下载说 100%，不算完成，得字节落地才算；检索返回五段话，不算回答，得有证据才算。三个互不相干的项目，一条规则。