Now and then I find myself reading a question that starts like
- what is the best way to do X on Y?
- which is the best X on Y?
Most of these questions are marked as "not constructive". Nevertheless, quite a number of them are useful. A solution may be to require the author to change the question to a technical one, like
- How can X be done on Y? or
- Are there X that one can apply on Y?
instead of closing a question for not being constructive.