EDIT: No one was doing what the post suggests, so I accepted an idea from one of the comments, and embedded my response in a comment, not the post itself
I'd like to ask this question to you, and I'll respond it myself as well.
What Is The Worst Problem You've Ever Encountered and Solved? And the One You Didn't, Yet!
Some prior considerations:
1) I mean "problem" in a very general sense, it could be a math problem, an existential problem, a social problem, an akrasia problem, a disease problem etc...
2) I'd like people to give informative/didactic responses. Try not only to state the facts, but also to help someone who'd encounter similar situations to be able to deal with them.
3) When talking about the one you didn't, give enough specifics that someone would actually be able to help you.
The general idea is to teach people how to Win by example, taking in consideration all the shortcomings of biases etc...
Well, that is all. One solved, one not yet solved. State your own issues and help others here. Someone else's rationality is always welcome.
I agree with you. Receiving votes on our posts and comments is only an instrument to help us build better content. The content and how people use it is what matters.
Although the karma voting system provides imperfect information, it provides cheap imperfect information. Separating the question and answer seems like an easy way to make better use of the information that the votes provide. One benefit that I see from the separation is that you receive slightly more detailed feedback, like in a case where some people might upvote your post because of the thoughts that your question provokes but others may downvote the post because they take issue with your example. If enough people downvote the post because of the answer despite the quality of discussion that they think your question provides (which seems pretty unlikely), the post might become buried because of its low rating.