When I ask a question which is covered by canon, I get downvotes because its poorly researched . Alright. But, when I ask question which isn't covered by canon, it is said that its not constructive , so off-topic because speculative answers aren't allowed.
If community has problems with both 0 and 1 of a boolean, what should I ask?
I don't see a lot of questions, but I do notice that you phrase a lot of your questions as "what if" questions.
While I shy away from down-voting, the "what if" spin on a question forces it to be less constructive.
For example, your question regarding the result of a group-patronus cast in a sphere around a dementor. Your real question is regarding what happens to a dementor when encountering a patronus. You trivialize what is otherwise a good question by asking for the results of a situation that doesn't even seem remotely likely to happen in canon.
Your question about the veil would have been better if it asked what exactly the veil is doing. It's de-valued by asking "what if Voldemort went through the veil?". Why? Because he never went through and there's no chance for him to in cannon, so it detracts value from the question.
I find that a LOT of downvotes you got - especially on "poorly researched" side - are very subjective and frankly, undeserved. So my advice is, keep posting.
Work on iterative improvement. If someone makes a legit objection (and not a useless "you should have known it from seeing the movie" rudeness), ask politiely if they have specific suggestion on what to improve in the question and how. Try to follow them. See if it helps with voting trend.
As a random example, Pearson (the moderator) usually has had very good editing suggestions for the rare cases I got comments from him, that greatly improve the questions.
I think for me, in a subject like speculative fiction these unseen edge cases are rarely worth asking or answering. This is because in quite a few cases the root question has been answered and the question smacks of trying too hard to be imaginitiative, as well as being un-answerable as they aren't coded in canon.
