Some new questions get closed because they are duplicates. They link to an older question which is old, has an accepted answer and probably no more looked at.
Well... what if the new question needs fresher answers? The accepted answer from the old question could be obsolete, no more relevant, wrong under current circumstances, does not apply.. etc?
What if one has further questions to the old accepted answer? I am depending on the fact that that person is willing to answer or is still around. Do you add the question as a comment under the accepted answer for the old question?