in the modern world, increasing number of people of all ages play their cellphones in different public areas, such as stations, restaurants and shopping malls. is it a serious problems to the society? Generally speaking, I guess there are two reasons causing this issue. Firstly, there are a huge number of applications in the modern cellphones, especially some entertainments, which can make us enjoy ourselves when we feel alone. Secondly, because people want to behaviour as a gentleman or an achieved person, which can attract the suround people and make them think the central person is busy. As a result, everybody plays applications everywhere and "busy" communities were created in our modern world. For example, they go to the KFC handing cellphones to pretend to be a businessman, and it also make the society cold.