You should ask a question on WorldBuilding.SE if you are interested in the perspective of worldbuilders.
There are times when people can ask a question in similar form on multiple sites. But the different sites will always have a different focus. Physics.SE might very well answer you orbital-mechanics question if it's about real-world physics, but they ...
Questions with multiple answers are not inherently off-topic
We are getting into The problem with opinion based questions here. The main problem from my point of view is that this is a big, blurry region where on-topicness and off-topicness are close to each other and everyone has a different understanding of "where to draw the line" and where ...
Secespitus has provided an excellent answer, as a supplement I'd like to add that without a way to evaluate answers people have no idea where to focus their time.
Here is a perfect example from the early days of the site which would without question be closed now: https://worldbuilding.stackexchange.com/a/2626/49
Without even trying I came up with 7 ...
Huge ramble short; Worldbuilding is about fiction and pretty much dedicated to hypothetical questions, this gives you a huge advantage when it comes to getting information useful to you in forming a new world. The other sites you have mentioned may give you hard, real world, facts that you can use but often don't tolerate hypothetical questions at all, I ...
As someone who voted to close, I will admit that it could be argued as on-topic, but there is a problem that I pointed out in comments and will attempt to further explain here (as well as provide a few other words).
Answers may vary from entirely mundane ... to extra-ordinary
This is an "anything goes" qualifier. It makes each and every answer ...
You want to know if this kind of question is ok on WB:
"Does X violate suspension of disbelief?"
Compare with this kind:
"Are X and Y compatible in the same world?"
This kind gets asked all the time. Let Y = "the real world" and you essentially have our reality-check tag. Is that the same as the suspension of disbelief? No. But it is mostly a subset -- ...
A partial support for - at least some aspects of - WB being a debate is the number of answers per question we get. I think there should probably be an easier way to run a query over multiple sites but I couldn't see it, I just did a few to compare and got:
av # answers per question
Idea generation is OK, if narrow enough.
For example, not even an hour about there was a question What are all the changes human will get after the next Ice Age. This is, of course, too broad. This kind of idea generation should be closed as such.
On the other hand, questions like How can I safely brighten my secondary star? are perfectly OK to me. It ...
Let me posit four classes which can be used to classify any questions that arise when creating a world. (Of course, by ‘world’ I mean that which some might call “universe” of a story or an open setting.)
someone has a question which pertains to some minor aspect of their created world.
The aspect is believed to be peripheral, and probably would never make ...