What is the dual nature of the invention of queueing, according to the text?

Answer

The practice evolved socially over centuries, while the science has a singular mathematical inventor

The practice of forming an orderly line is described as a gradual social invention, whereas the science of queueing (Queueing Theory) has a singular inventor in Erlang.

What is the dual nature of the invention of queueing, according to the text?
inventiontheoryprocesslinequeue