Q:

Tagging answers?

After having read this: "Tagging a question based on its answers" it came to my mind that it might be helpful to tag answers.
This would help grouping questions (my marking them as duplicates for example) that came up with various ideas why something might not work, which in fact all reduce the same common problem, thus all having similar answers.
Would introducing tags to answers be an option?

Update (to explain my thoughts behind)
There sure is an implicit relation from answers to their question, by just being the question's answer. 
However this relation is not (always) obvious from the question's tags.

Lets have a set of questions all tagged differently. 
Let's further assume all those question can by answered by the the same answer (A). 

How to find those questions, by just knowing the answer to one of them?
One approach could be to re-tag the question depending on the answer (as proposed by the link I quoted above).
But let's assume further those questions could be also answered by another answer (B) and this answer (B) would mutally exclude answer A it might have not been a good idea to tag those questions using a tag related to A, as this might keep the alternative answers (B) from comming.

A:

I accept I didn't fully understand your question.
But we already assume that an answer is based on the tags in the question. If it isn't, you know what happens to it after being downvoted by the community.
So, tagging answers are redundant and even worse, it clutters the UI.

