I came across a duplicate question relationship which I think should be inverted. The closed question has better answers.
From the accepted answer in the current duplicate I like:
It's a polite way of saying old people, and generally refers to those who are retired
it's the polite way to refer to long-lived people.
While from the accepted answer in the duplicate target I don't like:
sinónimo de ancianidad.
SE Meta makes clear that an older answer can be the one to stay open, if it's more useful. First example:
Usually a recent question will be closed as a duplicate of an older question, but this isn't an absolute rule. The general rule is to keep the question with the best collection of answers, and close the other one as a duplicate.
If the new question is a better question or has better answers, then vote to close the old one as a duplicate of the new one.
You can flag and ask a moderator to merge after closure if they're exactly the same.