I was creating a question on Stack Overflow and I wrote something like "what's the best way of doing X?". This was considered subjective, so I got a red banner saying it was likely to be closed. When I changed "best" to "preferred", however, the warning went away. Why is it that "best" is considered to be subjective while "preferred" isn't? The semantics of these two words in this context are incredibly similar.
Considering the help that says "We prefer questions that can be answered, not just discussed." when posting a question on Stack Overflow, you'd think that a word such as "best" would be not only preferred but desired.