doing wirh machine or hand? Noadays, with the advancement of modern technologies our lives is undoubtedly more convenient than before. Extraordinary development of tecchnologies bring about satisfaction and contentment into human life and approximately we can sense present of machines in whole works. But, some people like doing their works by hand. On the other hand, others, take the view that machines must do the works. This subject can somehow be interpreted as an equivocal and controversial issue in our modern society However, in my opinion, doing works by machines is more useful because, it save time and money. More significantly, it keep uas far from dangerous incidents. No wonder, modern technologies play important roles in our daily life. Our life are improved as a result of modern achievements of human being and we have to accommodate ourselves with these technologies. It should be noted that handling task with machins undoubtedly save our valuable time and energy. Computers, for instance, are able to calculate and doing works as quickly as possible with lowest error. In the past, all works were being done by hand. Agriculture, for instance, was a difficult work that need a lot of labor forces that was cumbersome and time consuming. But now, all these works like Irrigation, distributing of seeds and fertilizers all and all are being done by machines. Furthermore, there are plenty of work situations that have negative influencr on health of labor forces. Machins doing these works with minimum risk and more precise. For insance, in a nuclear power plant facing with emissions have destructive influencu on health of operators. Robots are able to accomplish works in forbiden areas of plants; robots can also inactive bombs on wars or be used on complicated surgeries. In summary, taking into account all of these factors, we reach the conclusion that maching not only can save time and money, but also reduce the risk of doing some dangerous works. If you are not agree with my opinion, I strongly recommend you thinking about the topic again and again.