Why do some bakeries ask customers what they want before they reach the counter?
The fastest transaction often starts before the transaction begins.
Customers usually think waiting ends when they reach the counter. Operationally, waiting often begins there.
The hidden mechanism is decision delay. Payment may take seconds, but choosing among products can take much longer. By moving that decision earlier, bakeries reduce the amount of time each customer occupies the service point.
Imagine a line of twenty customers. If each person spends an extra thirty seconds deciding at the counter, the total waiting time expands dramatically.
A second-order effect appears when customers expect faster service. Predictable queues encourage more visits during busy periods, making demand easier to absorb.
People often think queues are caused by transactions. Many queues are caused by decisions that happen too late.
