Introduction

Abstract

I think that nowadays most people would confirm that the world we live in is a complex one. Not only the problems that we face at a global scale (such as climate change and financial crises) but also many of our very personal day-to-day decisions (such as choosing between a fresh organic apple from oversee and a local apple maintained in an energy-expensive cooling chamber) involve nowadays, if carefully considered, the evaluation of entanglements of global scope. There is a high level of uncertainty in the evaluation of the consequences of our actions owing to the fact that those entanglements are often not clearly evident. There is also a high degree of freedom in what concerns the number of options that are in principle at our disposal, but if we do not sufficiently understand the functioning of the system there is no way to choose among them.