I know this is a discussion of the site itself so might be more fit for Meta Stack Overflow, but it is also a programming discussion.
I'm wondering what the algorithm for SO's question validation tool is. (Meaning the warning that a question might be closed for this or that reason).
Edit: no, no, I don't mean how questions become closed. What I mean is the following:
When you open a new question, and you are typing in the question title, sometimes a red line of words will pop up reading "The question you're asking appears subjective and is likely to be closed."