Consider this statement:
- All valid C.SE questions have one ideal correct answer.
This is a product of the Stack Exchange system. Only one answer can be selected for any one question. But this does not mean there cannot be multiple answers given to an answer that are correct, but are not the same quality.
What is an ideal correct answer?
An ideal correct answer is not an actual answer, but rather a hypothetical perfectly representative and factually verifiable answer. A Platonic ideal answer, if you will. Acceptable user submitted answers to a question will contain some (hopefully most) of the ideal.
Note that an ideal answer can represent multiple views, depending on the question. We cannot oversimplify this to only allow one perspective per an answer. Such as overview questions or instances where a good answer will point out variations on one minor point while the majority of the answer is a consensus. So this Ideal Answer is not singular in its perspective, but singular in the comprehensiveness and communication of its content. Only when the main thesis of one ideal answer is fundamentally different than another possible ideal answer do we have multiple ideal answers.
There can be only one
Now consider this statement:
- A valid C.SE question cannot have more than one ideal correct answer.
After all, if there is more than one ideal answer that conflict with each other, then none is truly ideal for that question.
Defining "Too Broad"
Using this understanding we can simply say a question is "Too Broad" when it could be given multiple factually correct answers that disagree.
We are not asking users to limit their question. We are not asking users to pick favorites, one group over another. We are simply asking for the question to be narrowed until it only has one ideal answer.
Who decides what is ideal?
This is admittedly the human element that is always present. It will require reasonable judgement by the community to identify where there are clearly multiple possible ideal answers.
How can we clearly and consistently do this and communicate it to users?
The final goal here is to get questions that are clearly focused enough that users that may answer can easily identify and work toward giving a singular ideal answer.
This is just my humble attempt to formalize what I see as a very nebulous and difficult idea for new users to quickly grasp, and a process which can be objectively applied to the very subjective questions this site involves by nature of it's topic. If you disagree with the fundamental philosophy behind my answer, please comment. If you have a criticism or suggestion for my application of this philosophy, also please comment. I am not trying to make a duplicate of other meta posts on this topic, but felt simply offering this answer to any one of the others would lose some of what I intended for it.