I found the book to be very informative, engaging, and accessible for anyone who is interested in learning about quantum computing. The author writes with clarity, enthusiasm, and humor, using analogies, examples, and anecdotes to illustrate complex ideas and concepts. He also provides references and suggestions for further reading for those who want to delve deeper into the topic.

That being said, I must admit there were moments where the complexity of the subject matter outpaced Kaku's explanatory prowess. This isn't so much a criticism of Kaku's writing as it is a testament to the sheer complexity of quantum mechanics. Even though Kaku takes great pains to simplify and explain, there are sections of the book that may require a second or third reading to fully comprehend. Any discipline that requires the use of molecules and atoms can be helped by the quantum revolution, including cancer research, aging. Why do we die? Think about it for a moment: There are zero laws of physics that say that we have to die,” Kaku says. If the reader is a bit suspicious of both the future of computing and AI and how it will affect our lives, Kaku’s effort is heads above the numerous books I’ve read on quantum computing work, separately, and the great potential when working together. Kaku produces great insights and explanations of how they work together. As a physicist, his investigation clears up many of the challenging technical issues that are glossed over by non-scientist authors. This is a huge differentiator.

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This book has a whole lot of speculation, a lot of 'mays' and 'mights'. 'Might' is used 178 times and 'may' a whopping 304.

When we can better understand our planet and our universe, we can not only improve the life and longevity of our planet, we can truly become an interplanetary species. But Fritz Haber is also known by another name: the father of chemical warfare. His inventions were responsible for millions of deaths throughout World War I, the Russian Revolution, and the Holocaust. By now, you’ve probably gotten the message that Kaku is bullish on the quantum revolution. Is he willing to admit there’s something that quantum computers can’t do? Yes, as a matter of fact. The underlying idea of this book is right up there in the title: quantum computers will change everything. In other words, not even the quantum computer revolution can change everything everywhere all at once.

Quantum calculations could also direct the course of gene-editing therapies with the potential of heading off diseases before they arise — an application that raises hopes as well as ethical concerns.