Two complexities The need to link complex thinking and complex adaptive systems science

This article reflects the division in the field of the study of complexity, between a mainly philosophical and epistemological approach (Edgar Morin called it "general complexity") and a mainly scientific and methodological approach (called by Morin as "restricted complexity"). The first perspective would be well represented by Morin's "complex thinking,"while the second by the new "science of complex adaptive systems."We show the potential and limits of each perspective, and conclude by claiming the need to relink both the perspectives into a comprehensive "paradigm of complexity" that is capable of providing, and following the original definition of Thomas Kuhn, at the same time a worldview ("general complexity") and examples of scientific achievements ("restricted complexity").