在这四个借口中，这可能是最有价值的借口。每个软件开发人员都看到没有提供有用信息的注释，并且大多数现有文档充其量都是这样。幸运的是，这个问题是可以解决的。一旦知道了如何编写可靠的文档并不难。下一章将为如何编写良好的文档并随时间进行维护提供一个框架。
Of the four excuses, this is probably the one with the most merit. Every software developer has seen comments that provide no useful information, and most existing documentation is so-so at best. Fortunately, this problem is solvable; writing solid documentation is not hard, once you know how. The next chapters will lay out a framework for how to write good documentation and maintain it over time.