Recently someone added a comment to a question I had posted saying that they thought my question was "opinion based" and inviting me to say if I agreed or, if not, why not (I'm assuming they were considering voting to close but, very considerately, wanted to know what I had to say first). At this point my question had received no answers.
The link here What is a "closed" or "duplicate" question? says that being "opinion based" is a reason to close a question as off-topic. It goes on to say:
Opinion-based: While many good questions generate some degree of opinion based on expert experience, answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.
Can anyone clarify what this means in practice? In particular
An "opinion based" question is defined by the types of answer it "tends" to generate. Obviously "tends" to generate does not mean "must inevitably generate" so what exactly does "tends to generate" mean...
a.) Does "tend to generate" mean that in practice (given the Politics SE community is what ever it is) the question attracts answers from people who have a general temperamental disposition to post answers which are "almost entirely based on opinions, rather than facts, references, or specific expertise"?
b.) if it means (a) what is the main concern of Politics SE? Does Politics SE want to avoid at all costs any answers being posted which are "almost entirely based on opinions", or does Politics SE not mind the odd "almost entirely based on opinions" answer if there are also some answers which are based on "facts, references, or specific expertise"?
c.) Or does "tend to generate" refer to the way the question is framed? i.e. that it tends to tempt even those who, by disposition, would normally post answers based on "facts, references, or specific expertise" to instead proffer a subjective opinion?
d.) Given that we are talking about a tendency rather than an inevitability, and whichever of the above meanings is the intended one, whether a question which has so far received no answers "tends to generate" answers "almost entirely based on opinions, rather than facts, references, or specific expertise" is a matter of speculative hypothesis. How in practice is someone considering posting a question, or someone considering voting to close a question before it has received any answers, inform their speculation?