I have just marked a [question](http://askubuntu.com/questions/434505/how-to-install-gnome-desktop-on-ubuntu-12-04-lts) as a [duplicate](http://askubuntu.com/questions/22946/how-do-i-install-and-use-the-latest-version-of-gnome) and after sometime I have found other users answering it with the same answers like in the linked duplicate question.

How can I handle such cases?