Complex System From the Foundations to Sustainability

Abstract

Since the beginning of physics the principle of linearity has driven physics and engineering, along with the study of isolated, ideal systems: "Cause and effect are proportional" Only in the eighties of last century, chaos became a center of research with it principale of nonlinearity under the often misunderstood slogan "The flap of a butterfly's wings can change the world". Today we know that reality means compex behaviour, at the border between chaos and regularity. After describing briefly, how complex systems fit into the grand physics theories,we will categorize complex using their communication to the environment and illustrate those categories with examples. Then, I will argue thet from this categorization a Principle emerges, which defines clear guidelines for sustainable human behaviour, without ideological influence of any kind.