==== Context ====
For the sake of context, I am a student in the biomedical sciences. I have taken a few psychology and neuroscience classes. I wanted to read this book because I am interested in learning more about the human consciousness and how it is related to the biological brain. However, I have never had any formal introduction to it and none of my classes have focused very much on this topic.
==== Overall ====
Overall, I enjoyed this book. It was an unique reading experience, but it was definitely not what I expected. This book has a lot to offer beyond just the biological connection to consciousness (which was my expectation). However, there are sections where the author tends to get bogged down in discussion and musings, and to me, this detracts from the overall experience. Not everyone will enjoy this type of book, but the ideas and theories offered by Dr. Tononi on this field are fascinating to think and debate about.
=== Synopsis ===
"Phi" is a story about the famed astronomer and scientist, Galileo. Similar to "guided enlightenment" theme of "A Christmas Carol", Galileo is helped by three scientists on his journey to understand our consciousness. In the first third of the book, Frick (based on Francis Crick, the geneticist who also spent a great deal of time studying the consciousness) takes our protagonist on a series of encounters to help him answer Galileo's original question: "How could mere matter generate mind?" Once Galileo is convinced of the soul-brain connection, he faces more difficult questions regarding consciousness - questions that can't be explained by simply looking at research and clinical findings. In this second part, Alturi (based off of Alan Turing, whose namesake Test has implications in consciousness and artificial intelligence), demonstrates to Galileo a series of thought experiments, that, along with the facts presented in his first journey, present a theory of consciousness based on Phi. The third part, hosted by a man modeled around Darwin, shows Galileo's understanding the overarching implications of the "phi" theory.
Each chapter of the book is meant to convey one big idea or theme regarding consciousness that Galileo and the reader. Most of the time, the bulk of the chapter is spent on a story, discussion, or metaphor that will be presented to the audience in order to emphasize that idea. Every chapter also has many pictures, paintings, or photos dispersed through it, each adding a visual element to the argument being made or evidence being presented. Lastly, a "Notes" section concludes every chapter, where the author provides his own commentary, explains minor characters, translates quotes, elaborates on evidence, provides references for the art, etc.
==== What I Liked ====
There are many aspects of this book that I really liked. Since I am interested in the brain and the mind, the content had an obvious appeal for me. And the content is really what this book is about. All the other parts of the story are just a way for Tononi to get his point across. I thought the neurological evidence and basic neuroscience was presented in a very clear and intriguing manner. Dr Tononi did a great job with his explanations of the biological background and brain deficits and disorders by presenting them in interesting anecdotes and with relevant historical characters and factual references. The material is definitely accessible to someone new to the field of neuroscience. And for those with a neuro background, it was presented in such a way that it was still interesting and instructive.
The structure of the book made it a very unique and enjoyable reading experience. The chapters are often a balance of subjective discussion with a connection to a more objective element, such as neurological evidence, such as when Tononi uses Tale of the Two Cities to explain the difference between the cerebrum and the cerebellum, and why one is involved in consciousness and the other isn't. Likewise, Tononi uses a balance of both scientific evidence and relevant art, history, culture, and mythology. This balance can also be seen in the illustrations used: alongside stunning photographs of stained hippocampal neurons will be Renaissance paintings. Besides photos of Classical Greek sculptures, Tononi will place a hand-sketch of the corpus callosum, the bridge between the brain hemispheres. Yet both elements, the objective brain MRI scans and the subjective portrait of Copernicus, are skillfully woven together by Tononi to illustrate an idea about consciousness.
I also really liked the "Notes" section at the end of each chapter. These aren't just references and citations. Rather than write as the author, Dr. Tononi does something unique and adds commentary to Galileo's journey as if he is a detached observer, discussing a journey he is witnessing himself. This definitely adds an interesting perspective to an an already engrossing chapter, and you will definitely want to read every "Notes" section.
One of the most obvious elements of the book is the language and writing of Tononi. He writes in a very flowing and eloquent manner that makes it easy and pleasant to read through. It is almost as if you're reading a poem. The dialogue of the characters is also very well written. Frick's lines, such as: "You are empty, Galileo, and have no spirit: nothing enters your immature body at conception and nothing leaves your carcass at death" and "You are merely another beast in the great zoo of the universe" convey his character - that of scientific certainty and arrogance - artfully and make him a far more relatable part of the journey. Tononi's writing style is definitely an enjoyable and attractive part of this tale.
Other things I liked include the minor characters, often pulled from literary or historical contexts. I enjoyed reading about their contribution (often counter-argument) to the discussion and how Tononi decided to portray them. And if you don't know much about them, the author talks about them in his "Notes".
==== What I Didn't Like =====
Back to content, which is the purpose of this book. I have one complaint about the book. It's not huge, but it did bother me and it was prevalent. I thought that at several points throughout the book, Dr. Tononi's discussions became too abstract and too convoluted to clearly convey the point of the chapter. This was especially common problem in the latter parts of Galileo's journey, where the author is attempting to create complex theories and associations and project potential implications. It just feels as if he tries to be too complex and ostentatious, and this can unnecessarily slow down reading all throughout the book. On the last third of the book, I couldn't clearly understand some of the points Tononi was trying to make. Maybe this won't be a problem for a more experienced reader.
===== Final Thoughts ====
Dr. Tononi's book is not for someone who is looking to understand consciousness through a purely biological lens. In fact, only a third of the book would satisfy such an audience. Nor would I suggest this book to someone who is looking for just a layman's explanation - the biological explanations and bases are explained well and are not very technical, but the abstract discussions and thought experiments might not be what they are seeking. "Phi" is for someone who wants to view consciousness through many different lenses, both objective and subjective, but ultimately connect all those perspectives together to an understanding of the topic reached by Galileo and proposed by Dr. Tononi. As I said, this is a fascinating topic and the book has a lot to offer regarding it, but my suggestions would be to take your time reading it and understanding the ideas and arguments that are made in it. Whether or not you agree with his theories, this will allow you to get the most from this book.
In summary, this is a beautiful book that is both instructive and very interesting to read and think about.