我很早就开始学习编程了。那时我14岁左右。我有各种疯狂的想法，但不要问我准确的时间，因为那是很久以前的事了。

Ok, so, I believed for a while that if you use the term synchronize in Java, then Java solves this nasting synchronizing thing for you I believed for at least half a year, likely more, that static typing would improve performance. I believed that freeing something would return memory back to the OS. I believed that malloc calls boil down to checking if there is enough free space on the OS, so malloc would be inexpensive. I thought a long while that Java was built with all the benefits and flaws of the other languages in mind, into a "perfect blend" that would take the best properties of the other languages and reject the mistakes. I vastly overestimated the number of cases where LinkedLists outperform ArrayLists. I thought that NP-hardness was a proof that no INSTANCE could be solved efficiently, which is trivially false, for a while. I thought that finding the best flight-plan on travel agency web sites would take so long because of the "Travelling Salesman Problem", as I proudly chuckled to my relatives (when I was small, alright?!)

还能想出更多。不知道我坚持了多久。对不起。

PS: 啊，好吧，这个被清除得并不慢，但我看到新手时不时地这样做，所以我想你可能会感兴趣:我还认为要存储不确定数量的东西，你需要为每个东西声明一个新变量。所以我要创建变量a1 a2 a3…，而不是使用一个变量a，我将它声明为一个向量。

喂!,

我只是在设计和写代码。

没有需求收集、文档或支持。

欢呼,

当主流设计模式在计算机科学课上被引入时，我认为它们很棒。在此之前，我有8年的编程经验，对于如何创建好的抽象概念，我真的没有扎实的理解。

设计模式就像魔法一样;你可以做一些很棒的事情。后来我发现了函数式编程(通过Mozart/Oz、OCaml、后来的Scala、Haskell和Clojure)，然后我明白了许多模式只是样板，或者额外的复杂性，因为语言表达能力不够。

当然，几乎总是有某种模式，但它们在表达性语言中处于更高的层次。现在我一直在用Java进行一些专业编码，当我不得不使用访问者或命令模式等惯例而不是模式匹配和更高阶函数时，我真的感到很痛苦。

假设我把代码写得很好，尽可能没有错误，这就是我能做的最好的事情。事实证明，有时候经理们更喜欢那些努力成为他们最喜欢的人，而不是把工作做好的人。

我以为静态输入就是你一动不动地坐在键盘前。

人们知道他们想要什么。

在很长一段时间里，我以为我会和人们交谈，他们会描述一个问题或工作流程，我将其放入代码并自动化。结果每次发生这种情况，他们以为自己想要的并不是他们真正想要的。

Edit: I agree with most of the comments. This is not a technical answer and may not be what the questioner was looking for. It doesn't apply only to programming. I'm sure it's not my longest-held assumption either, but it was the most striking thing I've learned in the 10 short years I've been doing this. I'm sure it was pure naivete on my part but the way my brain is/was wired and the teaching and experiences I had prior to entering the business world led me to believe that I would be doing what I answered; that I would be able to use code and computers to fix people's problems.

我想这个答案类似于Robin关于非程序员理解/关心我所谈论的内容的回答。这是关于将业务作为一个敏捷的、迭代的、交互的过程来学习。它是关于学习编程猴子和软件开发人员之间的区别。这是关于意识到两者之间的区别，并且在该领域真正优秀，不仅仅是语法和输入速度。

编辑:这个答案现在是社区-wiki，以安抚人们对这个答案感到不安，给我代表。