It seems like a fairly common thing for somebody to ask an unanswerable-with-information-provided question and then "go away" and not respond to comments with questions or tentative ideas.
I'm wondering if there is something that we could do to encourage the OP to respond – basically some way to set the expectation that asking a question places a burden on us to try and respond, but also on the OP to reply to the responses. Burden isn't quite the right word here, but I think it gets the sense across.