2 points
This is why so many people edit their comments that are wrong and get corrected by someone else to say EDIT: CORRECTED BELOW or something, to prevent mindless downvotes from lazy people not reading the full chain of comments. Personally I think it’s worse like that but I can see why they do it if they care about karma.
5 points
I prefer people do that than either delete the comment, or edit the original. Otherwise the comment chain makes no sense, and people don’t get a chance to learn from the original incorrect comment.
1 point