Does body language count in this?
Does anyone remember the shift in the services from pointing an index finger and saying "Oi, you!", to the flat palm, 4 finger point?
Please tell me it wasn't as a result of some Neddy deciding that pointing might offend. (That was the case in the 80s with using expletives to subordinates, but no-one knew what expletives were, so no effect.)
CG