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[Stores] should make a single line feed multiple cashiers. For three cashiers its about three times faster than having a line for each cashier. Here’s why: In the single line/single cashier set-up any delay - like a price check - stops the line completely. In contrast when a line feeds to multiple cashiers it’s likely that only one of the three customers in front of you will have a delay - because recall that in Erlang’s model delays and events are distributed randomly - and that means a register will likely be open.
