Notice how the question has been extensively edited to resemble a well thought question that can be answered. I presume the editors that did so just read the best answer and retro-fitted the question to fit the answer. They were trying to fix a bad question, in deference to a good answer. And that's good. But this also require insane amounts of effort and knowledge to do, which if nobody is willing to spend I see no point on keeping such question open/undeleted.
I go in more details about this in two of my other answers on SO:
