I saw this scenario several times on Stack Overflow:
Somebody asks a relatively easy to answer question and immediately gets two good answers that answer his question perfectly.
A few minutes later somebody submits another answer that does not include anything new; it has the same solution to the question with a bit less text.
That answer is absolutely redundant but technically correct. What can I do against those answers? I'm not sure if I should downvote them because they are correct from a technical perspective.