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What is MO's exact policy on answering or not answering off-topic questions? Assuming there is some well-defined policy. My guess is: you are allowed to answer off-topic questions and if somebody provides a precise, detailed answer to an off-topic question, you should not downvote them. Downvote ...
As suggested in another post, sooner or later we will form a strong raw database of open problems with their approaches and updates. Then the OpenGarden and OpenProblems projects will serve as a formal presentation of open problems.
The proposal was closed in Area51 because it was seen as too c...