⭐️ ⭐️ ⭐️ ⭐️ 4/5
Thank you Scribner for providing an ARC for review consideration via NetGalley! All opinions are my own.
I discovered another great writer in Carlo Rovelli to continue learning about physics through his approachable teachings. On the Equality of All Things was a quick read focusing on the immense discoveries seen in quantum theory, general relativity, observers, time, space, existence, and morality.. Rovelli pushes thinkers to be open to adjustments to our beliefs as once-inconceivable ideas come to light. He also warns that the concepts we use on Earth to measure time and space simply do not apply in the broader vastness of the universe.
Even having learned this in similar works, I still cannot get over the craziness of it. As Rovelli writes, “On Earth gravity is more or less the same everywhere... This is not the case in the wider universe. Time passes at different speeds for different travelers: when they meet again, they have generally not aged by the same number of years." Equally eerie is how general relativity describes reality as a set of fields that define spatial extension and time themselves, rather than sitting inside them. As he notes, "The location of an event only makes sense in relation to others. There is no 'where' or 'when,' except in a relative sense.”
While the book does discuss theories and their relationships, I found that as it progresses, it primarily makes a case for Rovelli's personal stances on how much value should be placed on each. I was interested in his perspectives on the flow of time and whether the future is open or fixed. However, I lacked the background in the intricacies of many other theories to fully engage with his arguments. Readers with a deeper understanding of physics will appreciate these perspectives, but I was hoping for more instruction on actual physics rather than debates on nuanced details. Even so, it successfully opened my eyes to what is important to consider so as not to fall into the trap of hyped-up theories pertaining to the flow of time and the Observer Effect.
Due to this, I found the concluding paragraph in lesson 5 gives a better synopsis of the book's true heart than the publisher's summary: “The reasonable question, it seems to me, is to ask what, given the current state of our knowledge... are effective concepts for thinking about the world, accounting for it, and navigating it?... Things all exist equally, in relation to others, each in its own way — a way that evolves as we learn.”
I discovered another great writer in Carlo Rovelli to continue learning about physics through his approachable teachings. On the Equality of All Things was a quick read focusing on the immense discoveries seen in quantum theory, general relativity, observers, time, space, existence, and morality.. Rovelli pushes thinkers to be open to adjustments to our beliefs as once-inconceivable ideas come to light. He also warns that the concepts we use on Earth to measure time and space simply do not apply in the broader vastness of the universe.
Even having learned this in similar works, I still cannot get over the craziness of it. As Rovelli writes, “On Earth gravity is more or less the same everywhere... This is not the case in the wider universe. Time passes at different speeds for different travelers: when they meet again, they have generally not aged by the same number of years." Equally eerie is how general relativity describes reality as a set of fields that define spatial extension and time themselves, rather than sitting inside them. As he notes, "The location of an event only makes sense in relation to others. There is no 'where' or 'when,' except in a relative sense.”
While the book does discuss theories and their relationships, I found that as it progresses, it primarily makes a case for Rovelli's personal stances on how much value should be placed on each. I was interested in his perspectives on the flow of time and whether the future is open or fixed. However, I lacked the background in the intricacies of many other theories to fully engage with his arguments. Readers with a deeper understanding of physics will appreciate these perspectives, but I was hoping for more instruction on actual physics rather than debates on nuanced details. Even so, it successfully opened my eyes to what is important to consider so as not to fall into the trap of hyped-up theories pertaining to the flow of time and the Observer Effect.
Due to this, I found the concluding paragraph in lesson 5 gives a better synopsis of the book's true heart than the publisher's summary: “The reasonable question, it seems to me, is to ask what, given the current state of our knowledge... are effective concepts for thinking about the world, accounting for it, and navigating it?... Things all exist equally, in relation to others, each in its own way — a way that evolves as we learn.”
I highly recommend picking up this book if you have a foundation in physics and philosophy and want to engage in a discussion about the importance of certain areas of the field. The detailed footnotes are also a major benefit for those looking for a heavily researched work. I will certainly be picking up more of Rovelli's books.
