I want to know the answer to the following question:
The invention of elevators brought with it questions of social etiquette and formalities, generally referred to as what?
All the background I'm provided with is that "In Lifted: A Cultural History of the Elevator, author Andreas Bernard documents other social impacts caused by the modern elevator, including thriller movies about stuck elevators, casual encounters and sexual tension on elevators, the reduction of personal space, and concerns about personal hygiene.". Is that enough to answer the question?
Answer: no