I believe that if one of us can work out what the OP probably wants, particularly if they're new, we should edit the question ourselves rather than copping out and slapping the VTC button. We have the power to edit - we even get badges for editing - so we should use that power, and then leave a comment on the question saying that the OP can edit it themselves if we've got it wrong. — @Monty
I fundamentally agree with this, but I'd like to add to it
I've done that myself: edited a user's post to fix it and then left a comment explaining the edit and inviting the user to roll-back the edits if they didn't like them. Nine times out of ten, it's appreciated.
But! In the back of my mind is that ever-present worry about intent. I can't read the OP's mind. I can, at best, only believe that I understand what the OP is after. I've actually had arguments with people in the comments to an answer I gave to a question that I should have "thought of this" or "thought of that" or "limited my answer because of this" or "expanded my answer because of that," followed by my inevitable comment, "the OP didn't ask for/about that... if you think it's important, get a clarification from the OP."
I've debated with people because my interpretation of what the OP wanted wasn't what someone else thought the OP wanted. I've occasionally had to pull rank ("Kiddo, I have 140K+ rep and you have 1,500...") but I only do that when I'm absolutely exhausted with the debate. The fundamental problem here is that we deal with such a creative and imaginative topic that even when we are expected to act in the role of "physics-lite" (which I loathe), it's too easy for two or more people to disagree about what a third was thinking.
And then there's the problem of our somewhat unwritten policy (I think it did finally get written...) that if someone answers, no edit is permitted that invalidates that answer. I'll be honest with you, I'm kinda sick to death of that policy. It forces the OP into having to ask the question again to clarify what they really meant — and I've seen those questions closed as duplicates with the argument that they should have edited their first question. This policy is a lose-lose proposition that makes the answers more important than the needs of the OP. Honestly, shame on us for making the "experienced" community more important than the new user. Someone tell me to post a Meta policy change that vacates that particular belief. I'm that close to the edge.
Now, hold that thought while I address another of the important issues @Monty's brought up
Monty's absolutely right, there's a small group of us that are the close-vote leaders. I'd like to believe that I'm at least 90% correct when I post a close vote (and at least 99.9% correct when I both VTC and down vote), but I've also caught myself being more concerned about the rules than I am about participation on the Stack.
Monty, while I'm thinking about it, is there a hammer-open ability that's the mirror of the hammer-close ability? I'm a gold-badge science-based user, which means given the right balance of supporting tags, my one vote closes the question. Does that mean my one vote would also open it?
When I notice my behavior is too much, I step away from the Stack for a week or two to "cool off" and reset my expectations. But I like to think that at least I'm providing clear explanations as to why I'm closing — and even clear explanations concerning a problem even when I'm not closing — and those explanations can reach the 5-6 comments-in-length point.
Frankly, @Monty's admonition to edit rather than close makes sense — especially from the point of view of my willingness to provide paragraphs of instruction (which have even occasionally found their way into my answers — I've been chastised for that, too).
One more thing about @Monty's perceived threat...
Stack Exchange has an existing policy against persistent down-voters. Most often they're "revenge votes" cast by one individual against many or all of another person's questions and answers due to some offense, real or imagined. Have you ever noticed when you lose or gain rep because a user's been removed? Yup, it's often because of behavior like this.
I wouldn't be surprised if SE had a similar policy against serial close-voters. I might be irritated if the Mods sent me an email telling me I was over-the-top and needed to cool off or else (I've actually received such an email due to a comment debate years ago) — but I shouldn't be ashamed. Our mods frequently don't get directly involved unless things are basically out of control and I've found reason to respect their dedication to the stack. So, yes, I believe it's a reasonable for the mods to take action against serial close voters, knowing perfectly well that I could be one of those black-star recipients. After all, an 80% close record for those listed, consecutive questions is deplorable.
Which is why I can buy into editing
We believe in the power of community editing. That means once you've generated enough reputation, we trust you to edit anything in the system without it going through peer review. Not just your posts—anyone's posts! — Help Center - edit posts privilege
Editing is important for keeping posts clear, relevant, and up-to-date. If you are not comfortable with the idea of your contributions being collaboratively edited by other trusted users, this may not be the site for you. — Help Center - Why can people edit my posts?
To clarify the meaning of the post (without changing that meaning). — Help Center - both pages
We need to embrace this idea more fully — even if it means backing away from (or completely vacating) the no-edits-may-invalidate-answers policy. If we're that worried about invalidating answers, edit the post then leave comments on the answers telling them post edits may have invalidated their answers and they need to update their answers, if necessary. It should be our responsibility as experienced users to keep up with the needs of the OP, not the OP's responsibility to kowtow to our answers. (Sorry, irritated....)
But we do need to pay great attention to the idea of clarifying the meaning without changing it. In other words, we're not permitted to change the question into "what the OP should have asked" or what we think would be a better question. We should be editing it to make what we're reasonably sure the OP meant is made clear.
I up-voted your answer, @Monty.