A newcomer shouldn’t have to know the subtleties of the guidelines. When I go to the library and ask the librarian a question they don’t reprimand me for the formulation of my question. They don’t refer me to the weekly research/reference class (which is great by the way). They try to help me find what I’m looking for. Sometimes I find questions on SO through google that are dupes, but if it weren’t for that dupe I may never have found the original with the search terms that I used.
This isn’t to say that SO’s rules are wrong, I just believe that there are those who are more concerned with the decorum than the functionality. Unfortunately it feels like those users outnumber the functional ones.
The other issue is, even when the reason is given, sometimes you would not agree with that. E.g. sometimes people claim it's a duplicate, although they are not deep enough into the topic to really tell, and then the question gets closed. Or people claim is subjective, while in fact objective answers are possible. Or many other things.
That being said, I agree that Stack Overflow has a duplicate issue.
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