two bodies
orbiting each other:
without distance, crash.
Orbit [Haiku]
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Category Archives: science
BOOK: “Scientific Jiu-jitsu” by Will Weisser
Scientific Jiu-Jitsu: A Unified Theory of Grappling by Will WeisserMy rating: 4 of 5 stars
Publisher Site – YMAA Publication Center
Release date: June 2, 2026
This book outlines principles of positioning, alignment, and movement used to gain advantage while grappling. It is not a technique-centric book but rather is a concept-centric one. Weisser does for Brazilian Jiu-jitsu what Jiichi Watanabe and Lindy Avakian did for Judo with their book alternatively titled The Secrets of Judo or The Art and Science of Judo. Watanabe and Avakian focused more on both technique and elementary physics than does Weisser, but there is common ground in ideas of what positions make a body strong and what movements bring vulnerability. The biggest area of divergence between Watanabe’s book and Weisser’s is simply the difference between Judo and Brazilian Jiu-jitsu. Watanabe and Avakian direct the vast majority of their attention to how one gets the opponent to the ground and relatively little on what to do when one gets there, and Weisser’s book is the other way around — i.e. primarily assuming at least one person is already on the ground.
Weisser’s book does assume that the reader has a background in Brazilian Jiu-jitsu, using terms specific to that system without necessarily providing elaboration. I say this just to point it out as (to be fair) I realized that I would have thought nothing of it if it used Japanese Jujutsu / Judo terminology in the same way. (I did have to go to Google at one point to elucidate what turned out to be a Dragonball-Z reference that went right over my head.)
Weisser’s book uses a combination of graphics, including photographs. I found it easier to see the linkage between what the author was describing in the text and what was in the photos in some cases than in others. Often, there was a single photo catching one static situation, and if the grapplers were closely entangled (as grapplers are want to be,) it was not so easy to see — even with different colored uniforms. [Note: I should point out that I was reading an ARC galley, and so that may all be sorted in the final formatting.]
As one who knows little of Brazilian Jiu-jitsu, but with some experience with other grappling systems, I found this book readable and thought-provoking. The statement of ideas is clear, and I’d recommend it for grapplers looking to engage in thinking about first principles of grappling.
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BOOK: “Mathematical Finance: A Very Short Introduction” by Mark H. A. Davis
Mathematical Finance: A Very Short Introduction by Mark H.A. DavisMy rating: 4 of 5 stars
Publisher Site – OUP
This is Oxford University Press’s Very Short Introduction to the field of the “Quants,” individuals who apply mathematics to questions of how to value financial assets and assess risks. The book begins by laying out how banking and financial markets work, then discusses how interest rates are determined, and then explores the quantification of various risks faced by lenders. The book finishes by discussing how the 2008 financial crisis impacted the field and how it operates in the wake of that event. (The 2008 crisis was described in an intriguing fashion in the book and movie The Big Short. It basically resulted from deceptive grading of mortgage-backed securities such that investors who thought they had the ultimate default-proof asset in fact had assets that not only could collapse, but — in fact — were bound to.)
Even though this book is a concise introduction, it shouldn’t be confused for a simple guide. It is not only mathematically intense but also jargon dense. It’s not a complete waste for someone without any advanced mathematics and / or economics / finance background to read, but there will be large patches that will likely be lost on one. (And if you’re not at all used to reading scholarly writing, it may be excessively daunting.)
If you want a quick guide to the field of quantitative finance, and you have an understanding of the mathematical notation used in calculus and statistics, I’d recommend this book. If you are interested in the topic but aren’t at all mathematical, you might start elsewhere (the aforementioned, The Big Short, might be a good place.)
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PROMPT: Favorite Month
Northern or Southern hemisphere? Landlocked or coastal? Temperate or Equatorial? I need more information.
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PROMPT: Famous or Infamous
The most famous people I’ve met are famed for their scholarly or political contributions to society, which is to say 98% of the population have never heard of them.
What I am really sad to say is that I’ve never met anyone truly infamous. I keep hoping one of those scientists will turn evil, but they just stay nerdy.
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PROMPT: Podcasts
I don’t properly listen to any, but I watch clips and segments from many on YouTube — mostly those of comedians, but some of a popular science or current events / international affairs / macroeconomic nature.
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DAILY PHOTO: Science City, Kolkata
BOOK: “The Future of Humanity” by Michio Kaku
The Future of Humanity: Terraforming Mars, Interstellar Travel, Immortality and Our Destiny Beyond Earth by Michio KakuMy rating: 4 of 5 stars
Author Booksite
As the title suggests, this is one of the books for which theoretical physicist Michio Kaku dons his futurist cap to speculate about what is to come. Other of his books that might be included in this “series” are: Visions, Physics of the Future, The Future of the Mind, and Physics of the Impossible. This particular book focuses on how humanity will spread beyond the planet (and, perhaps, beyond the universe) to survive the (probably distant, but – also – inevitable) threats to the species. While there are other topics discussed, such as the search for immortality and transhumanism, those topics are often framed as necessities of interstellar expansion.
As one would expect of a physicist, the book is highly focused on the physics of the subject. There is little discussion of the psychological difficulties, nor of biological issues such as the fact that humanity is not so lone wolf as we think, and taking off to other planets and living in space without the Earthly life we are interdependent on would involve challenges we have difficult fathoming. All of the challenges that are usually treated with handwaves in science fiction are also handwaved off here.
The book is fun and interesting reading. It’s probably more insightful of science fiction than of our future, but that doesn’t make it less compelling. The seven years since this book was published have seen a lot of change, and there may be a book on this subject that has more of a finger on the pulse, but I still enjoyed reading it. [The downside of writing about the future, even with a focus on the distant future, is that one risks becoming obsolete rather quickly.]
If you’re interested in how humanity might survive into the future, I’d recommend this book. If you enjoy popular science and / or science fiction, you’ll probably find it intriguing.
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BOOK: “Long for this World” by Jonathan Weiner
Long For This World: The Strange Science of Immortality by Jonathan WeinerMy rating: 4 of 5 stars
Author’s book site
This book considers the science around the question: will there come a day when human beings live forever (or at least considerably longer than we’ve achieved to date? — i.e. hundreds or thousands of years.) A secondary question, explored in the last of the book’s three parts, is should we want to?
It was a courageous decision to write this book because it focuses heavily on the ideas of one particularly controversial figure, Aubrey de Grey. And by “controversial” I don’t mean to the general public, a public which has limited understanding of the science involved, but rather a man who is controversial to many (perhaps, most) of his peers. Of course, with a Pulitzer under one’s belt, one can afford to take a few chances. (Weiner won in 1997 for The Beak of the Finch, a popular science work on evolutionary biology.) To be fair, Weiner does not present Grey’s ideas from the perspective of an acolyte. On the contrary, he is clearly skeptical and not shy about presenting the countervailing arguments put out by others in the gerontological field.
I can see several reasons why Weiner chose to focus on Aubrey de Grey. First, De Grey is an eccentric figure, and that makes for more interesting reading. Second, De Grey also takes the boldest possible stance on the topic (i.e. that there is no reason humanity won’t be able to overcome aging and death, given sufficient time and effort.) Finally, De Grey has a readily digestible roadmap for eliminating aging. De Grey identifies seven problems that must be solved, arguing that the last — i.e. defeating cancer — is the only one that will present a true challenge in the long run.
While I wasn’t converted to a belief that immortality is inevitable (and that wasn’t the book’s objective, though it may be de Gray’s,) the book does offer interesting food-for-thought, both on the scientific question of what it would take and on the philosophical question of whether we should want to.
If you’re interested in aging and mortality, I’d recommend reading this book.
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BOOK: “The Mind Electric” by Pria Anand
The Mind Electric: A Neurologist on the Strangeness and Wonder of Our Brains by Pria AnandMy rating: 5 of 5 stars
Publisher Site — Simon & Schuster
There are A LOT of pop neuroscience books out there that reflect upon what we know about the brain from what goes wrong with it. I thought I was done reading such books because, while the first few are fascinating, they tend to retell the same stories.
That said, I’m glad I read this one, and what made it worth reading was that the science was explored in a very personal way, and I don’t just mean that the author recited her own personal experiences or those of her patients (though she does both,) but rather that the whole book is imbued with her worldview. She relates maladies of the mind to works of literature, of Greek and Hindu mythology, and to other aspects of culture in a relatable manner.
Another factor that sets this book apart is that its author shows a passion for language. In that sense, it reminded me of the works of Oliver Sacks (who she references a number of times,) rather than your average — articulate but linguistically conservative — neuroscientist.
I’d recommend this book for any readers interested in neuroscience, particularly anyone looking for a book that sets itself apart from the crowd. (I don’t recall it even mentioning Phineas Gage, which I thought was a requirement of all such books.)
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Tiger Riding for Beginners 