I have run into one or two "duplicate answers". They are technically correct, but they do not add anything new to the current answer. Furthermore, the current answer is often accepted, and several years old.
The one consensus I run into, on the Stack Exchange, is that such answers are demeritting to the purpose of Stack Exchange. We already have the information, but they add a general lack of quality, as well as failing to add additional information. In effect, they are just noise. However, the manner at which they should be dealt with often differs between down voting and flagging.
To give one particular example, we have "How would I find the SDK folder for Android Studio so I can build my Unity project?".
The accepted answer was posted in February of 2015, and reads as follows:
"the sdk may be hidden in the AppDatafolder (the folder itself was hidden).
If you want to look for AppData, but can't find it, open explorer and type %appdata%, press enter. It will show the hidden files. Path will look like this; C:\Users\Your.name\AppData\Local\Android\sdk1 Now that you have found the sdk, go back in to unity and click EDIT / Preferences / External Tools. You will see a field for Android SDK location - enter the path in that field."
Recently, we have had an additional answer posted, which reads as follows:
"Go C:/user/username/appdata/local/sdk but some time it may be hiden if this floder hiden studio give error message like SDK tool directry missing"
Formatting aside, I can not see any value in the second answer. We already gain this information from the first answer.
What should we do, in these situations? I find that on various exchange sites, the appropriate response can differ, but often boils down to two or three solutions:
- Simply downvote and comment, assuming that the answer will be deleted through the low-quality queue
- Flag for moderator attention, sighting "not a real answer", and assume the investigating moderator will realise the duplicate
- Flag for moderator attention, specifically commenting to say that this answer is a duplicate of the original answer.