Nowadays, with the development of internet and technologies, we can buy things without going to the shopping mall and also have various way to communicate, to "talk" to other people without waiting for weeks to receive a friend's letter or meeting them face to face. To make all of these changes happened, lots of talent people, our scientists, researchers and engineers have worked so hard to create incredible technologies. Now we do everything "online"; using your smartphone to order foods, clothes or even a new car; talking to your friends from thousands kilometers away. All of these technologies and tools made our modern life is more convenient, but it also create problems that we never had to deal with before .In my opinion, I think this circumstance is both positive or negative development.