No you don't know that about comments. Approximately one line in 10 that we initially write is wrong. This is true for both comments and code. The difference is that the mistakes in the code tend to get caught and fixed, while mistakes in comments do not. So a wrong comment does not indicate that there was a change, because it could have always been wrong.
in reply to Re: Code Maintainability
in thread Code Maintainability
As for who I do and don't want to work with, I have had the displeasure of working with people who never comment, and of working with people who comment everything heavily. Of the two styles I far prefer no comments at all. The style that I personally like is very sparsely commented code that is written in such a way that the code itself stands as a comment.
For more details I strongly recommend reading the old thread starting at Re (tilly) 2 (disagree): Another commenting question,. In that thread I discuss in detail a piece of code that I just wrote, the commenting decisions that I made, and the reasons for my deciding what to comment, where and when. I no longer hold to quite that style, these days I'm inclined to write longer variable names than I was back then, but I haven't changed views by that much.