I agree that properly merging questions would be a cool feature, but the way it currently works is a good enough solution for me. A duplicate question gets closed (usually before it gets many answers) and SO automatically adds a link to where it's already been answered. The duplicate then won't get any more attention (and why should it), and OP can just click the link to see the other question (which presumably already has a bunch of good answers).
The only obvious problem is when questions are closed as duplicates when they really aren't, but that's often based on the question being misunderstood (which can also be due to poor wording) and only rarely because the person flagging just wasn't competent enough to fully understand the nuances of the question.
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I agree that properly merging questions would be a cool feature, but the way it currently works is a good enough solution for me. A duplicate question gets closed (usually before it gets many answers) and SO automatically adds a link to where it's already been answered. The duplicate then won't get any more attention (and why should it), and OP can just click the link to see the other question (which presumably already has a bunch of good answers).
The only obvious problem is when questions are closed as duplicates when they really aren't, but that's often based on the question being misunderstood (which can also be due to poor wording) and only rarely because the person flagging just wasn't competent enough to fully understand the nuances of the question.