This question is locked with the following notice:
This question and answer are a collaborative effort: if you see something that can be improved, edit it!
Except that while the answer can be edited because it's a Community Wiki question, the question itself can't be, because it's locked. I don't know the reason why it was locked, but maybe the notice's text should be changed or omitted? (I have no opinion on whether the question should stay locked or not.)