I've always wondered how clearly non-duplicate, yet related questions get marked as duplicate.
If someone asks what is the difference between X and Y, its different than asking what is the question what is the difference between Y and Z. Clearly there is overlap but they are definitively not duplicate questions.
Yes ideally there would be the question, what is the difference between X, Y, and Z, but if there isn't, simply linking to the first question and marking the second one as duplicate does not answer the second question.
Of course its not just security.se but many other sites. So this leaves me wondering what the motivation is.
Are loosely related questions fair game for being marked as duplicate? Do you get points for marking things as duplicate?