Consider the question https://superuser.com/questions/1280411/what-are-file-systems - there is no indication of what research the querent has done, and punching the title into Google generates a bunch of links to sites (including Wikipedia) that give good useful explanations. It's a low-quality question, certainly, but I believe that flagging it as such is inappropriate, as the quality could be improved by the querent, without much effort. On the other hand, I 'just have this feeling' that there won't be any improvement, even though I've prompted the querent to try to improve it.

Should I just leave it unflagged, and hope that the querent takes the hint, or is there an appropriate flag for this?