Dr. Pier Luigi Gentili

This is me in mountain (August 2018)


I love investigating Complexity.

The XXI Century Challenges can be defined Complexity Challenges: they regard Natural, Computational, Descriptive, and Bio-ethical Complexity.

​Natural Complexity regards the study of Complex Systems. Complex Systems are natural systems that science is unable to describe exhaustively. Examples of Complex Systems are both unicellular and multicellular living beings; human brains; human immune systems; ecosystems; human societies; global economy; climate and geology of our planet. Science cannot predict the behavior of such systems, especially in the long term.

​Computational Complexity regards those computational problems that can and cannot be solved accurately and in a reasonable lapse of time with current electronic supercomputers and software.

Descriptive Complexity is related to the recognition of variable patterns.

Bio-ethical Complexity regards all those delicate choices that societies have to make as far as the birth, suffering, and death of living beings are concerned. 

These four types of Complexity are strictly interwoven. If You want to know more about the link between Natural, Computational, and Descriptive Complexities, please read my book titled "Untangling Complex Systems: A Grand Challenge for Science" and my papers.

If you are curious about the links among all the four types of Complexities, I invite you to be patient because I am writing my second book about them. If you champ at the bit to know the links, I invite you to contanct me.


Department of Chemistry, Biology, and Biotechnology
University of Perugia
Via Elce di Sotto 8
06123 Perugia
E-mail: pierluigi.gentili@unipg.it
Twitter: @Pier_Complexity
Tel.: +39 0755855573

The University of Perugia (Italy)

Department of Chemistry, Biology, and Biotechnology

I am along the path that is shown on the cover of my book. The path is in Faidello (Modena, Italy) close to the more famous Abetone (August 2019).

Jean-Claude Micheau, Senior Scientist of CNRS in Toulouse, who worked with the Nobel Prize Ilya Prigogine, has written a Foreword for my book.

I have presented my book at the Chemistry Department of the Université Paul-Sabatier in Toulouse (France). September 2019.

The innovative interdisciplinary course on Complex Systems that I present to students in chemistry and that is based on my book, has been published in the Journal of Chemical Education. 2019, 96, 2704-2709.

A review of my book has been written by Prof. Luigi Campanella and  published by "La Chimica e l'Industria"

The first official presentation of my book at the Complexity Literacy Meeting in Abano Terme (PD, Italy). November 2018.

Presentation of my book at the International Conference on "New Perspectives in Science Education" in Florence (Italy). March 2019.

In a hotel of London after presenting my book at the London Interdisciplinary School (September 2019).

Presentation of my book at the University of Perugia (03/02/2020)

Since February 2020, the paperback version of my book is available. In this picture, I exhibit the three versions of my book: paperback, ebook, and hardback.

I decided to show this path on the cover of my book to indicate that the content of my book is a personal journey to discovering the features and secrets of Complex Systems. In the distance, there is a bright light. It represents the hope of a transdisciplinary theory that will explain Complex Systems (August 219).

First pages of an interview conducted by the financial consultant Fabrizio Monge for the Italian Magazine Investors' (I part: 2019, 3, 14-18. II part: 2019, 4, 26-30).





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Last Update:

the 6th of July 2020