Technology advances can always be good if： 1. We can do it not at the expense of environment and the interests of minorities 2. We can find a reasonable, justicial and balanced way to manage the application of the technology No doubt that technology advances bring possibilities and efficiency to our lives, it is also the symbol of human civilization. But at the same time, we feel it is dangerous. Why? It is not the technology advances itself is dangerous, but we human beings are too dangerous. We are afraid of one day we will lose the control of everything, but actually that definitely would be human beings ourself to open the door of hell.