I ask this question to have a clear consensus about this, stemming from the current opinion of the community (and not something discussed during site planning on Area 51 or alongside another discussion). This should in particular serve to make our closing behaviour more consistent (and finally adapt our custom close reasons) as well as to eliminate confusion (see, e.g., here).
What kinds of question must indicate prior research to be on-topic?
Each answer represents one type of question; votes indicate approval or disapproval as to whether such questions have to indicate prior research.
- This question is not about the extent to which prior research has to be indicated. (See this question for this.)
- Extended discussions about whether a type of question has to fulfill this requirement should happen in a separate meta question.
- While prior research is a general requirement for asking here, this does not have to be indicated for all questions (though it often is a good idea to do so). For the types of questions we are talking about here, there is an automatic burden of proof for the asker (see also here).
Remember that this can only work, if you vote. If you agree with this approch in general, upvote this question; if you disagree, downvote it. If you agree that some types of questions must indicate prior research upvote the respective answers, if you disagree, downvote them.