That's very cool. See it's the same as shaving, it's a universal glue, but at the same time it's not universal; not everyone likes to talk about shaving and tea. So in a way it's very universal but also quite selective It embraces all cultures, and all types and such yet, again, not all are called. Somewhat of a niche. Yet applicable to all people, ages and places.
Have you read 'Youth' by Joseph Conrad? You'd like it.