> Great product designs require no manual, and similarly, great interfaces need no documentation. Imagine having to read a manual on how to use a coffee mug. I

> Great product designs require no manual, and similarly, great interfaces need no documentation. Imagine having to read a manual on how to use a coffee mug. It's a fallacy to assume a perfect interface needs no documentation, just as it's a fallacy to assume perfect code needs no comments. Most interfaces are far more complex than a coffee mug. In reality, the more complex something is, the more documentation is needed to describe how it works, how to use it, how not to use it, and why it works that way.