I try to never write a comment about anything that I've already written in code. I only add information that is necessary to know to run the code but is not in

I try to never write a comment about anything that I've already written in code. I only add information that is necessary to know to run the code but is not in the code. I do it like this as I think that conceptually duplicating code logic through e.g. comments can be dangerously imprecise. E.g. when someone changes the code (and not the doublicating comment), there are no checks in place for this mismatch of code and comment to be caught by e.g. a test.