First, one of the disadvantages technology has brought to humans is a clinical one. These days in hospitals remote operations and diagnosis are conducted more often than before. While these technological applications are reliable, some patients will think of treatment by technological devices as cold, and feel worried. As a resolution to this problem, medical workers will have to communicate with patients and their families more carefully to further mental care. Medical workers also will have to think more of humanity as well as consideration. The second of the disadvantages technology has had is how to avoid illegal transactions online. As information technology has developed, more of social tasks have been easier to do. At the same time, the number of deception and leakage of personal information cases has also been increasing. As a result, not a few people have lost much money. In order to avoid being deceived, the Internet users should be more careful. Recently, the generations who have been familiar to digital environments have emerged. Those who take the Internet for so granted are more likely to be involved in cyber crime. All of the Internet users will be requested to behave much more cautiously not to be deceived.