In several other stack-exchange sites, "broad" questions are quickly punished due to frequently the other sites being about subjects where you need precision.
For example with math, usually there is only one, or a few correct solutions for a problem, if the question then has "infinite" solutions, the question itself that is wrong.
But not only a question I asked, but several of the questions that answered my doubts, were closed due to being "too broad", thus I ask: does Worldbuilding follow Stackoverflow, Math, Physics, etc... precise rules regarding this? Should you ask questions only if there are only one anwser possible? If that is the case, how can be questions be asked in a way that prevent the consumers of the content in the future from finding "word of god" spoilers in the questions?