It depends on the question. Sometimes the question is either obviously
already well-explained, or obviously
not. In the former case, you
just answer it (if you can), and in the latter case, you conduct what
a library worker would call a reference interview, wherein by a series
of questions of your own you attempt to find out what the real question
is that you should be answering.
Of course, some questions are in a sort of in-between zone where
they can be answered outright, at least on the surface, but
you're not quite sure whether you're getting at the best possible
answer without probing further. Not sure what to tell you about those.
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