It should be noted that in this case both the OP and one answering user match on the two sites. :)

I think the point is we really need to stop people recommending users to open vi or vim. There is nothing to laugh about one having to Google how to exit them, because it's a weird mess. This has been already debated in a question.

Once you click that banner, you won't be able to exit it. :P

Indeed, that space between computer and science would be a syntax error. Or you could turn those into quoted strings. :)

@Zanna no worries. I think it's difficult to come up with a general statement about any possible kind of missing goal/info in a few words. I will try to think about a specific suggestion if I can.

When I wrote “could serve as inspiration” I didn't mean to copy it verbatim, but just to write an explanation that makes sense for incomplete questions. It is indeed aggressive but we shall not copy it as is.

OK I've finally found the time to write down two alternative suggestions.

I don't share your definition. I would call both those categories "incomplete questions", but "unclear" is only one of the two. Can I actually post two different self answers here and let the community vote on those? Should I make them CW?

Interestingly, I just found a similar Q here, but it just asks "why don't we have this option?": meta.askubuntu.com/q/5628/271

@Zanna the difference is between "I don't understand what you want" and "I do understand what you want but I actually need a little detail that you didn't mention". I will try to propose a different wording then later today or tomorrow. :)

Broken English can lead to a point when you read a paragraphs of missing articles, verbs, no punctuation... Posts that make you think "WUT?". Again, I am not talking about typos, really.

@Zanna when I talk about a lack of question mark I am not talking about typos. I am talking about questions that do not contain any question. Like posts that literally say "when I boot my computer, it shows this icon". Now those are "unclear what you are asking". Not posts that ask "I have a problem with WiFi dongle model blah, the connection drops after a few minutes, my Ubuntu version is X. How do I get a stable connection?". The latter is not unclear, it is perfectly fine even if we need to ask the output of lsusb or something.

Well, there is no functional difference in any close reason except for duplicates. The point is not functionality but providing reasons that make sense. An unclear question is a post that either does not contain a question or one where the goal is totally not understandable.

Sorry guys, my previous comments with the word "motivation" should be read with the word "motive" or "reason". I can't edit them anymore... Gosh, I hate false friends! I think too much in Italian.