This chapter deals with the issues related to the complexity and adaptability
of human to nature. What is complexity in a complex world? Seven concepts/properties
of complexity are presented. The world created by humans demands of itself changes
of posture relative to its adaptation, without this, the planet Earth does not seem to be a
friendly environment to live. Thus the science of complexity is necessary to make
everyday relations, once marked by simplicity, occur without trauma, since they are
necessarily complex. What does it take to adapt to the world of complexity? Coping
with disruptions, defending from attacks, resolving conflicts, correcting drift into
failure, and avoiding stagnation. Necessary tools for adapting the technology for
designing complexity into organizations, processes and products references are
presented: architecture, multi-agent software works, organizational, and process design
cases, engineering design cases, etc. It is not known how the future will be, but
certainly complexity will be one of its characteristics.
Keywords: Complexity, Adaptability, Nature, Society, Brain.
