The different ways that supermarkets organize service at the deli counter offer an example of salient transparency. Inefficient supermarkets rely on the mob to self-organize. Customers are expected to form a queue, and the servers have the task of deciding who's next. When approaching the mob, a customer cannot tell whether or how the mob has organized, how long it will take, or who to queue behind. He or she must expend mental energy to establish and maintain position in line and may experience anxiety over whether cutting in line will occur.