We have at least two questions dealing with non-verbal communication that may be specific to German-speaking countries or regions:
Do Germans count on fingers starting from the thumb? – No close vote or flag was ever cast on this question. It has 26 upvotes, more than four thousand views and was a hot network question.
Why do German students knock on the desk? – This question received four direct close votes and one from review, “because it is about culture, but (explicitly) not about language”. Nobody voted to leave it open or reopen it. It has +3/−1 votes.
The above information is as of writing this post and subject to change.
As these questions were received in quite a different manner, I am asking:
- Under what conditions, if any, are questions about non-verbal communication on-topic?
- In what respect, if any, do the above questions differ in respect to their on-topicness?
- Are we happy with the different treatment of the above questions?
Clarification: To keep the discussion straightforward, I suggest to exclude sign language from this. (Not that I am saying that it should necessarily be treated differently.)