Sometimes I encounter the closure of threads like
Illustrative puzzles of chess themes
Now I certainly agree with this closure in line with practice elsewhere on SE. But what about threads like this:
How do I spend my time on chess in boring meetings?
Aren't these equally discursive and subjective? I refer to 'threads' rather than questions because, to be honest, both strike me as open invitations to discussion, without the sort of carefully defined parameters that are usually called for on other SEs.
How do we draw the line and distinguish the kind of question that belongs here from one that doesn't?