ublic place, do something unusual for a short time, and then quickly break up. they are usually organized with the help of the internet or other digital communication network. at a predetermined time, they gather and perform some distractions(消遣)such as waving their hands and exchanging books. then, they quickly break up before the police can arrive. using mobile phones, the flash mob can change its location if the first one has been replaced for any reason. bill lasik, senior editor of harper’s magazine, organized the first flash mob in manhattan in may 2003 and the first successful flash mob came together on june 3, 2003 --- after the first attempt was