How does the automatic subjective filter work?
A while ago, I was writing a post on Stack Overflow and I received an error message indicating that my post was likely to be deleted because it was subjective. I played around with the wording, and it seems like the message was generated by some algorithm that included searching for use of the word "best." I didn't think my question was subjective, but I reworded the question until the error message went away.
The best explanation I could find on SO's definition of subjectivity was at http://blog.stackoverflow.com/2010/09/good-subjective-bad-subjective/, which emphasizes that the questions asked should be answerable. This makes sense, but I don't understand how this correlates to subjectivity or to the error message. I've reasoned that this must be because I have a subjectively different understanding of what constitutes subjectivity.
I'm cool with that, but it would really help me to use the site if I could understand the error messages and what type of content should not be posted. I'm sure that the site must use some objective standard for evaluating subjectivity, so, what is it?