To revist this article, visit My Profile, then View saved stories . To revist this article, visit My Profile, then View saved stories . To revist this article, visit My Profile, then View saved stories . queue is no easy task—and the mass of people snaking through London is no ordinary queue. But help is at hand—from the behavioral science of queue theory to tricks of the trade more commonly used at theme parks, its possible to keep hundreds of thousands of people in order. Especially when...

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