Disaster mitigation practices and researchs can create friction on the various values and meanings that make up life. For example, elderly persons refuse to participate in evacuation drills, saying, "If a disaster strikes, I'll die." If the view of life and death, the view of nature, publicness, religion, and “disaster mitigation” are not arbitrated, it will prevent realization of the disaster reduction in society and life. It is necessary to comprehend the relationship between disaster mitigation and society down to the dimensions of life and body. Therefore, this paper names the society that various technologies related to disaster mitigation are organically connected, and that develops by itself while influencing the lives and attitudes of people living there as "Disaster Mitigation System-Society", and draws its structure. First, this paper takes the Earthquake Early Warning as a good example of technology in the Disaster Mitigation System-Society and analyzes how organically connected technology networks permeate life and body. Next, we describe the general structure of the Disaster Mitigation System-Society and point out that the PDCA cycle of technology, body, behavior, and improvement continues without headguarters. Finally, as the direction of the development of the Disaster Mitigation System-Society, the paper presents the "information approach" that thoroughly evolves the Disaster Mitigation System-Society itself and the "life approach" that tries to harmonize various values by carefully reading the meaning in life.
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