For example, the asker of this question about wallpaper resolutions: What is the default resolution of a wallpaper that fits the homescreen exactly in an Android phone? marked the first answer that was posted as correct. The answer is not correct. In this case what's the most appropriate way to correct this?
I just added the correct answer and left a couple comments. I didn't down vote it because I wanted to give the author of the answer the opportunity to correct his answer. Thoughts?
Treat it like any other answer. Leave a comment about the error to urge the author to correct it and to alert others.
There's a common fallacy about the "accepted answer;" that its means it was selected as the "right" answer or the "best" answer. Accepted answer means only that it was the post that best helped the author of the question. Nothing more. It's unfortunate that the answer happened to be incorrect (easily remedied as I described above) but there's nothing to be done about changing the author's personal choice.
