I've seen some questions (usually in links from a question) that are, I believe, duplicates of an old question, with a different phrasing.
Both questions are more than a year old, have high reputation, and have very good and enlightening answers. However, they are duplicates, in my opinion.
Should I flag the less old one? Should I consider them as so historic that they should stay as they are?
On the one hand:
- moderators and high reputation users capable of voting on duplicates probably have more urgent and useful things to do
- users can still find those questions in the "similar questions" column
On the other hand, the question and answers would benefit from being "merged" officially.
I don't think this edge case is covered on Meta, nor in the FAQ, so I asked.