The influence of information network communication has two different sides of discourses. One indicates that information technology extends human life; the other says that internet communication brings us disaster. This oppositional dualism comes from the same media. In other words, information communication indeed presents both different discourses as two sides of one coin. With the dual thinking, the author attempts to reconsider the practice and specific cultural phenomena of cyberspace in information communication. It is tried to analyze information network from dual dimensions such as human/machine, fiction/reality, and public/private.