Butterfly Effect

The protagonist of the work is the so-called "Butterfly effect", well described by the sentence "The flap of a butterfly’s wings in Brazil can set off a tornado in Texas” by Edward Lorenz, physicist and forecaster, father of the famous Chaos theory. This effect shows how little variations in the initial conditions can produce big variations in the long-term behaviour of a system, which can be biological, chemical, phisical, economic or social. From this one can infer a fundamental concept: we are all linked, because an invisible line links us.