# On duplicates and linking to the original question

One of the purposes of Stackexchange is to create a sort of library of questions, which is easily searchable.

Surely this means that when a question is closed as an exact duplicate a link should be given to the original question? (If I remember correctly, a link has to be given when flagging a question as an exact duplicate, so the link should be known!)

However, it seems that this is not so!

I first noticed this today because of the rather confusing situation that arose from this question. A somewhat obscure question about looking at $S_5$ in terms of generators and relations was closed as an exact duplicate, but no link was given. I thought it was an odd question to be a duplicate, so I wanted to find the original. However, it turns out that the question was edited after the closing to become a brand spanking new question!

So, was this question a one-off? Are links normally given on such occasions? From memory, the links are often in the comments, but this is not the case here, and is presumably not the case always.