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I can't say for sure whether the world will be a better or worse place after 100 years, because I think one part will change for the better, while another part will be worse. In the science, everything has a different type. Many new machines have been invented. Those things will help people more efficiently.You can finish every work by "one touch"; you just hold a small remote, and it will order everything. For example, the car will drive to your house by itself according to your orders; the TV will choose the best program and tell you what is the important news for you today. We will have no traffic jams, because the cars will fly in the sky; you don't need to drive them, because everything is automatic.On the other hand, when we get so many new things in our life, that will cause some problems in life. Maybe people will feel strange around other people, because we will hardly talk to one another. We have known all of the answers by modern machines. We use the Internet to connect everything. However, we need to consider that eye contact, face expression, and physical touch are very important to human beings.