It was probably asked before but still...
Is there a general guideline when to post questions or start the discussion on the list RATHER than WP space?
Pages in projectspace whose purpose overlap with many threads in this list are obvious such as the sub-pages and talk pages of WP:RS and WP:V, WP:VP, talk:RfAdm, etc.
Going by "common sense" may be a default option but there are often threads here that would clearly be appropriate for being discussed at some of the pages above. I am not of course saying that they should not be discussed here. I am merely asking what is the general view on this. If this was discussed, please kindly point to the thread. If the guideline or an essay on this have been written and posted, I would appreciate the link. Thanks!