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Secret signals on the job: Waitresses at some 19th-century restaurants ensured speedy drink service by communicating with a non-verbal code. One server took orders, then placed each customer’s cup to indicate exactly what the customer wanted...
The term highway robbery has its roots in the late 17th century, when traveling in and out of town by night could be particularly dangerous. Highway robbers would leap out of the darkness, point a weapon at the occupants of an approaching carriage...