Is it easier to meet a 2.50 meters tall man in the street or that a virus born in a wild animal market spreads around the world and becomes a global health emergency?

How is wealth distributed and what generates growing inequalities in the population? Why do fake news spread so fast? Why does it never rain but it pours? And, above all, what do all these questions have in common?

The answer is in the science of networks, an ideal compass to understand a world "without equal" like the one that gives the title to this book.

Professor of Theoretical Physics and Mathematical Models, a leading international expert in the science of networks and complex systems, author Guido Caldarelli takes us into an increasingly connected and complex reality, revealing the mechanisms that "regulate the disorder" between all things.

In fact, the complexity of reality is articulated in network structures where connections are chosen from a large "disordered" number of possibilities, all more or less equally probable. The surprising fact is that these structures have many properties in common.

Thanks to the study of networks we can understand how order or disorder are created and predict the behaviour of chaotic systems even in sensitive areas as the social and economic ones.

Understanding complexity means realizing how the variables at stake are interconnected and learning how to predict their evolution so as to plan a better and more sustainable world with more opportunities for everyone.