Tag Archives: science

BOOK REVIEW: The Martian by Andy Weir

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The MartianThe Martian by Andy Weir

My rating: 5 of 5 stars

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If you like suspenseful science-fiction, humor, and are fascinated by science, you must read this book. I’m not kidding.

The premise is a simple cast-away story, except that it takes place on Mars—an environment in which a human can’t last for seconds without a lot of properly functioning technology. Astronaut Mark Watney is left for dead when a severe storm blows in, impaling him with a piece of metal, knocking out his vital statistics monitor, and blowing him into a drift. Having lost visual contact with Watney, showing no vital statistics, and facing the toppling of the crew’s escape vehicle by high winds, the mission commander decides that she can’t risk the lives of the entire crew to cart Watney’s body back home. The thing is; Watney isn’t dead.

The book is a rollercoaster ride of highs and lows associated with events that nearly kill Watney—either in an instant or by making his long-term survival impossible. The botanist / engineer must figure out how to survive for four years (until the next Mars mission is due—if it doesn’t get cancelled) with less than six months of supplies. (The mission was supposed to be one month but was aborted in the first week, but there were five other crew members whose rations were left behind.) If you think Tom Hanks had it bad in Cast Away, imagine having to produce food on Mars.

This book taps into the visceral feeling that works so well in the movie Gravity (but Weir does more homework on the science.) For tension, it’s hard to beat being adrift in space, utterly isolated from one’s species—or any species for that matter–and knowing you will die when your resources run out.

The main character, who is the only character for the first six chapters or so, is intensely likable. Mark Watney is funny, intelligent, self-deprecatingly humble, and can confidently problem solve in the midst of any crisis. If there’s a critique of the realism of this story (as sci-fi goes it is extremely realistic), it’s that Watney is preternaturally skilled at adapting to complete solitude. However, I don’t deduct for this, because if it showed him at the depths of despair that someone in his circumstance would inevitably go through, it wouldn’t be nearly as pleasing a book to read. If you’ve read a lot about sensory deprivation and / or what happens to prisoners over long stints in solitary confinement, I’d suspend the disbelief that might come from that knowledge and just accept that Watney is exceedingly good at saying, “Pity-party over. It’s time to make this work.” In short, humorous Watney is just a lot more fun to read than would be a despondent astronaut.

I think I’ve been clear that this is an outstanding book, and everyone should read it. I guess if you absolutely hate science (of any kind–because there’s botany, biology, physics, chemistry, engineering, etc. all rolled up into this book), you may find that it’s hard to stick with the glut of scientific / engineering discussions coming at you. Still, you shouldn’t hate science that much—what the hell is the matter with you. Weir writes in a readable style and the reader doesn’t get awash in minutiae. (For example, Watney even names the unit kilowatt-hour/sol [sol=a Mar’s day] the “Pirate-ninja” to make it more palatable and humorous.)

Read it. You’ll like it. Also, don’t wait because the movie is supposed to come out in the Fall.

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BOOK REVIEW: Sleep: A Very Short Introduction by Lockley & Forester

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Sleep: A Very Short IntroductionSleep: A Very Short Introduction by Steven W. Lockley

My rating: 4 of 5 stars

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This is one book in a large series of books put out by the Oxford University Press. All of these “Very Short Introduction” books are brief summaries of the state of research on a given topic in the arts, sciences, or humanities. Based on this book, I’d say the series is geared toward a readership of educated non-specialists. I say “educated” because the book did get into some technical areas, and while it doesn’t presume any particular knowledge of the science of sleep, it does use a scientific vocabulary with occasional academic sentences (i.e. packed with precise detail and lacking concern about readability.) That said, I’d say the readability is higher than the journal articles from which the information for the book was drawn. I suspect I’ll read more from this series. They are cheap on Kindle, provide a concise injection of the basics for a wide range of topics, and are pleasantly readable if you’re used to reading academic literature.

This particular book is about sleep. While, on average, sleep takes up one-third of a person’s life, it’s a subject that is often taken for granted. Like water, one doesn’t really think about it until one isn’t getting enough. However, as the book discusses in detail, all sorts of problems are associated with sleep deprivation, insomnia, and parasomnias (i.e. sleep events like sleepwalking, night terrors, nightmares, bedwetting, sleep-eating, and groaning.)

The book is written in nine chapters covering: the history of sleep, sleep generation and regulation, a brain on sleep, reasons we sleep, variation in sleep throughout one’s life-cycle, the nature of poor sleep, the connection between sleep and health, and the effect of our shift to a round-the-clock society.

There are a number of fascinating questions addressed by this book including:
1.)What does sleep do for us?
2.)Have people always tended to sleep eight hours per night?
3.)Why are some people morning people and others night owls?
4.)Why does one feel drowsy after lunch, but not necessarily when it’s time to hit the sack?
5.)How long can one go without sleep?
6.)Do all animals sleep?
7.)How do sleep and hibernation differ?
8.)Why do teenagers and the elderly have such odd (but different) sleep habits?
9.)Why do people sleepwalk, sleep-eat, groan in their sleep, or have night terrors?
10.)What is the effect of long-term insomnia on health?
11.) What happens to sleep if one has no rising and setting sun cues?
12.)What is jetlag and how can one fight it?

I learned some interesting facts, such as:
1.) On average, women report more insomnia, but, paradoxically, tend to sleep better than men.
2.) Pre-industrial people slept for about 10 hours a night on average, it’s believed.
3.) Many parasomnias occur mostly during REM (Rapid Eye Movement) sleep.
4.)The government can deprive prisoners of sleep for 7.5 days without it being considered torture (then they have to allow a full 8 hours sleep before another 7.5 day period started.)
5.) Long-term insomnia has been linked to heart-disease.
6.)Shift workers have a 50% greater incidence of breast and prostate cancer than day-workers.
7.)Visiting teams win 46% of the time if they are in their home time zone, 44% if they are traveling ‘with their body clock,’ and only 37% if they are traveling against their body clock.

I found this book interesting and informative. However, there are many books on the subjects of sleep and dreams that are more catered to a popular audience. Such books delve into intriguing cases and don’t dig as deeply into the minutiae of the science of the subject. I’d recommend this book, but not for readers who get bogged down or bored with scientific and technical discussions. If you’re looking for a book that’s loaded with pithy facts and fascinating stories, you can find a book closer to the mark by journalists who focus on science writing and who’ve got more flare for creative writing.

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Seeking Expert Answers About A Possible Bengaluru Ratzilla

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This fake rat is kind of large, but if you asked me how it differed from real Indian rats, I'd have to say the bling. Indian rats aren't ostentatious, and rarely wear jewelry.

This fake rat is kind of big, but if you asked me how it differed from real Indian rats, I’d have to say the bling. Real Bengaluru rats aren’t ostentatious, and rarely wear jewelry.

Occasionally, I will see a rat–usually the carcass thereof–that makes me exclaim… Duh-uh-AAAaaammmmm! They often look like beavers, sans the distinctive paddle-tail, but with a whip-like, hairless rat tail in its place.

 

These sightings have raised some intriguing questions:

 

The first question is for any biologists or geneticists who–quite improbably–might read this post. Is it possible for the offspring of an English Bulldog and a Norwegian Rat to survive? If so, I’m pretty sure that I’ve seen one. If I find out where it lives, will they name it after me? Can I pay them not to?

 

The second question is for statisticians–particularly bio-statisticians. Let’s say that 95 percent of rats successfully live their lives underground, in walls, and out of sight. Let’s further say that I’ve seen a rat that was 1.5 feet long and 0.75 feet wide. Is it possible to calculate how large the biggest statistically likely rat would be. I’m thinking, lurking somewhere in the sewers, there is a three-foot long and foot-and-a-half wide ratzilla–probably chomping on a cigar and belching occasionally.

 

The third question is for an ecologist.  I know that cats and other predators will attack–often successfully–prey that are larger than they are. However, given the freakish disparity in sizes that we are seeing, will the existing ecological order be overturned, and to what effect? Bangalorean cats are about the same size as American cats, but Bangalorean rats are about the size of American pigs–not the cute little pot-bellied variety but rather the kind that take a blue ribbon at a 4H County Fair. I know humans were once primarily prey, and only quite recently became dominant predators. This worries me because I know that humanity’s prey-like predilection to be scared of everything, combined with its unprecedented predatory weapon set, has fucked up the world but good. I can only image what a rat would do with a hydrogen bomb.

 

The fourth question for a rat neurologist. Are rats really that much smarter than turtles? I know the Teenage Mutant Ninja Turtles follow their Rat Sensei unquestioningly. I googled it. Rats live about 1 year and turtles can live to be about 40. So Splinter must have learned much faster in addition to being much smarter.

 

OK, the last one was not a serious question (but it’s a serious plot-hole for TMNT), but I do have one last question for the general public.

 

Which do you find more disturbing: a.) when you see a single mammoth rat? or b.) when you see an elaborate Vietcong-style series of tunnel openings and you know there is a billion rat army wriggling all over each other just centimeters below your feet?

 

Please don’t think I’m anti-rat. I know that, while we fear the plague-infested rats, it was really the fleas that gave us the Black Plague. I also know there are places like Karni Mata Temple in Rajasthan where rats are treated deferentially. There are an estimate 20,000 rats living on the temple grounds.

Source: Wikipedia entry on Karni Mata Temple in Rajasthan.

Source: Wikipedia entry on Karni Mata Temple in Rajasthan.

I guess this raises one more question for a rat nutritionist. How come these rats, which are fed and cared for, don’t get huge like the one’s lurking in the back alleys of Bengaluru.

 

 

 

 

BOOK REVIEW: Your Brain on Yoga by Sat Bir Khalsa

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Your Brain on YogaYour Brain on Yoga by Sat Bir Khalsa

My rating: 4 of 5 stars

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This Harvard Medical School Guide presents the findings of many scientific studies on the benefits of yoga, and it does so in a manner suitable for the layman. The book is written by Dr. Sat Bir Khalsa, a long time practitioner of Kundalini Yoga and a neuroscience researcher at Harvard, and is co-authored by a science writer trained in journalism.

I became aware of Khalsa’s work when reading William Broad’s The Science of Yoga, a book that is complimentary of Dr. Khalsa and his studies—a favor which Khalsa doesn’t return as he rejects Broad’s work as being overly sensationalist. The book does talk about Khalsa’s research, such as a study with young musicians at Tanglewood that examined how the practice of yoga increased their equanimity. That said, this isn’t merely a summation of Dr. Khalsa’s work. It’s what in academia would be called a literature review, but “literature review” implies a far more dismal reading experience than one gets from this book. It does present anecdotes in a way that is useful for a layman’s book, but would not be well-respected in an academic setting. This work isn’t designed for medical colleagues but rather to be of benefit to run-of-the-mill yoga students and teachers.

This is a very short book at only about 50 pages. The book consists of five chapters after an introduction which sets the stage and gives some relevant background on Dr. Khalsa. Chapter one delves into the effect of stress on the body and mind, and how yoga (and meditation more generally) has been shown to help counter the effects of bad stress (not all stress is inherently bad, as is addressed in the chapter.) Chapter two examines the effect of yoga on the body and in countering a number of common ailments. The third chapter considers how yoga might actually help one to be smarter and more creative. Chapter four presents the results of studies of how yoga can counter depression and improve one’s mood. Chapter five is in a different vein, and might well have been included as an appendix. The last chapter gives an overview of the various types of yoga to assist readers new to yoga on what style might best meet their needs and disposition. This is a nice feature for those new to yoga, but also for veteran practitioners who’ve practiced one style and might not be aware of the wide range of styles out there. (A few of the styles mentioned are popular in India, but I don’t think are as well-known in the West.)

For such a thin book, this work covers a wide range of topics including–but not limited to–the effects of yoga on sleep, the immune system, neural plasticity, memory, math skills, and mood. A nice feature of the book is a series of brief exercises that one can practice to help reduce stress or achieve a desired goal. These practices are generally located at the end of chapters. Finally, while this book isn’t written primarily for doctors and other scientists, it’s endnoted so those interested in tracking down the studies the book references can readily do so.

I’m a big fan of applying a scientific approach to the study of ancient methods such as yoga. I would, therefore, recommend this book for yoga teachers and students who are interested how precisely these practices can assist them. It’s extremely short and easily digested. It’s in no way overbearing with medical jargon and is readily understood by anyone with a basic education in biological science.

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BOOK REVIEW: Flow by Mihaly Csikszentmihalyi

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Flow: The Psychology of Optimal ExperienceFlow: The Psychology of Optimal Experience by Mihaly Csikszentmihalyi

My rating: 4 of 5 stars

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Recently, I read and reviewed Steven Kotler’s The Rise of Superman, which is about how extreme athletes use a mental state called “the flow” to pull off some miraculous feats (e.g. “hanging righteous air” to use an appropriate term of art.) That book got me intrigued about the flow, and wanting to learn more. The logical next read was the book by the man considered the godfather of flow, the man who coined the term, Mihaly Csikszentmihalyi. Csikszentmihalyi is a Professor of Psychology at the Claremont Graduate University and formerly of the University of Chicago.

A Note on Editions: The book I read is the 2013 edition of a book that was first published in 1990. The two editions have different subtitles. The 1990 edition was entitled Flow: The Psychology of Optimal Experience and the 2013 edition is Flow: The Psychology of Happiness. It’s not hard to imagine what happened. The 1990 version was titled to appeal to scholars, and the former title both has more syllables and suggests that one might be able to use LaGrangian Methods (the calculus of constrained optimization) to maximize bliss—which would be double bliss for an academic. As Csikszentmihalyi’s work attracted widespread attention, there was a need for a title that didn’t sound painfully dull. To be fair, the word “happiness” has gained some purchase in scholarly literature in recent years, but in 1990 saying one was studying “happiness” would be akin to saying one would study the “cuddliness quotient” of kittens (actually the latter, having the word “quotient” in it, would test better with department chairs and funders.)

Flow is a state in which one’s entire mind and body is devoted to overcoming a challenge that is intrinsically rewarding. There’s a lot packed into that definition. First, the task must be difficult but within the skill-level of the individual. If it’s too easy, it’s too boring for flow. If it’s far too challenging relative to one’s skill, it may become frustrating before one can build enough skill to achieve it. Flow states can be achieved via many different kinds of tasks, and the middle chapters of the book are devoted to different types of flow-inducing events. Chapters 5 through 8 address, respectively: physical activities like yoga and the martial arts, mental activities like poetry, word play, and chess, work activities, and solitude and social activities.

Second, tasks must usually be autotelic, or intrinsically rewarding. If the only reason that one is doing an activity is for a paycheck, to stave off nagging, or to attract attention, one will be unlikely to find the flow. That doesn’t mean that one can’t receive external rewards, but the activity has to have something intrinsic that keeps one at it. Csikszentmihalyi’s approach was to interview people to access how happy they were, and what activities allowed them to achieve said happiness. He shares many anecdotes about individuals who were blissful, including people who derived happiness from work activities such as factory work, work that most people would find unpleasant and only tolerable to earn a living. Of course, these happy individuals didn’t just do the job in the manner of the poor schlubs who hated their work-life. Instead, they found ways to make the work challenging and, in doing so, they often made themselves indispensable and gained not only job security but also the respect and admiration of others. What is key is that one’s mindset determines all of this, and the book focuses on the notion of controlling one’s inner life to achieve happiness via the flow.

Third, flow is not achieved in a distracted state; all of one’s being has to be surrendered to the act at hand. Multi-tasking is not conducive to the flow.

The ability to override one’s evolutionarily-programmed instincts is key to being able to obtain a flow state. One must be able to stay on task and devote one’s consciousness to the action at hand. This is the central theme in chapter 2, entitled “The Anatomy of Consciousness.” The book also speaks to a subject that I’m currently interested in, which is how states of mind and body that have been known since ancient times, but whose mechanism of action weren’t well-understood, are explained in the world of modern science. Csikszentmihalyi refers to yogis and Taoist masters as he describes the flow. Flow state isn’t new; it’s just newly put in the context of science, rather than mythology.

I enjoyed this book and found the chapter on the flow in movement and bodily activities particularly educational. Csikszentmihalyi has written a few related books on creativity and the flow applied specifically to sport. I would like to learn more about the neuro-anatomy and neurochemistry of the flow, as this book doesn’t delve into the hard science of the flow, and much of this science has occurred since the time this book was first published anyway.

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BOOK REVIEW: The Future of the Mind by Michio Kaku

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The Future of the Mind: The Scientific Quest to Understand, Enhance, and Empower the MindThe Future of the Mind: The Scientific Quest to Understand, Enhance, and Empower the Mind

by Michio Kaku

My rating: 4 of 5 stars Amazon page

The Future of the Mind continues a line of inquiry that Michio Kaku has been following with his earlier books Physics of the Impossible and Physics of the Future. The central question remains: what sci-fi imaginings might come to fruition, which of them are impossible given the laws of physics in the known universe, and what breakthroughs or discoveries would be necessary to achieve the achievable. Technology is the inevitable gateway to these advanced breakthroughs. Humanity has eliminated gross evolutionary pressures through technology—this might not remain true, but we can certainly not expect X-men style mutations as a result of the foreseeable progression of humanity (which is more likely to be described by the horrible—though probably presagious 2006 movie Idiocracy than it is by the X-men movies.)

The theme of the book, as the title suggests, is the mind. As the most complex system that we know of, the human nervous system offers fertile ground for investigation. Among the sci-fi mainstays considered by Dr. Kaku are telepathy, telekinesis, false memories (think Total Recall), intelligence enhancement, mind control, artificial intelligence, and the nature of alien minds. Along the way he considers the challenges of reverse engineering the brain and whether consciousness could take a non-material form (e.g. embedded in a beam of light.)

As always, Kaku’s book is easy to follow, even for the scientific neophyte. Few others write on the topic with such clarity. While part of Kaku’s book deals with the same concepts covered by Roger Penrose in his book Shadows of the Mind, the Kaku book scores much higher in readability. Of course, the flipside is that Kaku’s book offers less explanatory power. So if one isn’t looking for pop science simplification, The Future of the Mind is probably not for you. However, if you want the jist of the science and have neither the background nor the energy to digest the mathematical and biological nuance, you’ll find this book readable.

Incidentally, Kaku is more optimistic about the ability to computationally replicate consciousness than Penrose, which the latter argues is impossible. Professor Kaku’s optimism runs through all of his books. He takes the stance that if one can imagine it–and figure out a technological or theoretical loophole around the known barriers –one can achieve it. Therefore, some of his discussion of what could come to pass depends upon theories about, for example, black-holes being true. It should be noted that Kaku is quite clear about the differences of opinion that exist about these theories and the role that differences between theory and reality could play in making science fiction into scientific reality.

I enjoyed this book. I’ve been reading a lot about neuroscience lately—entirely on the pop science level- and found this book to be beneficial to my understanding of the subject. It begins by discussing what is known about the brain and consciousness—it turns out that a lot remains unknown, but the technology of recent years has vastly improved our understanding of the brain, and it continues to do so by the day. The book also delves into the depths of what could come to be. There is definitely pragmatic understanding to be gained as well as outlandish, but fun, science fiction ruminations.

For sci-fi fans and writers, it’s definitely worth reading. I had many new conceptions of the future as I read the book. (I might suggest reading Physics of the Impossible first, which gives an overview many “impossible” technologies and explains how few are just flat impossible regardless of technological development and scientific discovery. My review of that book is here.) Many of the ideas covered may seem a bit eccentric, such as what first contact with an alien race would look like. (Kaku is of the notion that the transmission of an immaterial consciousness(es), possibly in conjunction with self-replicating machines would be the likely shape of such an alien presence.)

I recommend this book for almost anyone. We are really only beginning to venture out of the dark ages understanding the mind, and this book provides an interesting map what might be possible.

As I mentioned it, sadly, this may be the more likely future of the human mind:

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BOOK REVIEW: The Rise of Superman by Steven Kotler

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The Rise of Superman: Decoding the Science of Ultimate Human PerformanceThe Rise of Superman: Decoding the Science of Ultimate Human Performance by Steven Kotler

My rating: 5 of 5 stars

Amazon page

This is NOT a book about the comic book hero. It’s a book about a mental state called “the flow” and how adventure and extreme athletes have used it to make tremendous strides in their sports. The characteristics of the flow include extreme focus, time dilation / time distortion, a vanishing sense of self, extremely high performance, fearlessness, and a falling away of everything non-essential to the task at hand.

Kotler is by no means the first author to write about the flow. The term was inaugurated by a book entitled Flow first published in 1990 by a University of Chicago Psychology professor named Mihaly Csikszentmihalyi. Csikszentmihalyi coined the term in the process of conducting a study on happiness. He found that happy people tended to engage in activities in which they could immerse themselves and find the zone. Contrary to the early part of Kotler’s book–in which it sounds like adventure athletes cornered the market on flow–Csikszentmihalyi says that said activity could be work or hobby and that the flow is to be found in poetry writing, yoga, martial arts, copy writing, or potentially any activity in which the skill level and challenge are both high.

(To be fair, Kotler does get around to recognizing that extreme athletes neither invented nor exclusively exploit the flow. However, his—well-taken—point is that such athletes are unusually good at finding, and dropping deep into, the flow in part because risk-taking behavior is an important trigger. And for free climbers [rock climbers without ropes], mega-ramp skateboarders, and bodysuit skydivers sometimes there are only two possible states of existence—the flow and being scraped off a rock.) It should be noted that some of the elements of flow sound a lot like the states that have been described by various mystical religious traditions for centuries, e.g. the dissolution of a feeling of separation between self and the rest of the universe. Warning: religious readers may find it disconcerting to read that there are scientific explanations for states that were once attributed to communion with god or the like.

While I’ve given Kotler’s book high rating, I haven’t yet given one reason to read it—and I do recommend people read it. First, while Csikszentmihalyi is the “father” of flow research, his methods were decidedly low tech–i.e. surveys and interviews—but Kotler reports on more recent studies involving neuroanatomy, neuroelectricity, and neurochemistry. Second, while Kotler delves into the science of the flow, he does so in a manner that is approachable to non-scientists. Finally, all of the narrative accounts of extreme athletes interspersed with the more technical commentary make for a very readable book, even if one is not particularly knowledgeable of—or interested in—such sports. I gave this book a high rating both for its food-for-thought value, and because of its high readability.

I will admit that I was not so enamored of the book when I first began it, and other readers may find the same irritation. For one thing, Kotler’s adoration of extreme athletes comes off sounding like diminishment of mainstream athletes and others involved in “flowy” activities. A prime example of this is seen in Chapter 1. Kotler gives us an endearing description of how gymnast Kerri Strug won the gold in the 1996 Olympics by sticking a landing on a shattered ankle. However, he then comes off a bit douchey when he suggests that Strug’s achievement pales in comparison to Danny Way’s skateboard jumps at the Great Wall of China.

For another thing, in his zealousness to prove that extreme sports practitioners are full-awesome while mainstream athletes are “meh,” Kotler makes some comparisons that seem apples and oranges to a neophyte such as me. If they are fair comparisons, he certainly doesn’t explain why they should be considered so. The best example of this is when he states that Olympic divers took decades to achieve increases in rotation that extreme skiers and skateboarders surpassed in much less time. This seems unreasonable for two reasons. First, divers have a very standard distance in which to achieve their acrobatics. In other words, they don’t get to build a “mega-platform” that’s 50% taller like Danny Way creates “mega-ramps” that were bigger than ever before. Of course, if you can increase the distance between yourself and the ground you can increase your spins, rotations, or whatever much more quickly (yes, your danger goes up vastly, I’m not diminishing that.) Second, the divers gained zero advantage from technological improvements, but the same cannot be said for skiers and skateboarders. In other words, if you go from skis made of oak to ones made of carbon nanotubes (that are 50 times stronger and 1/100th of the weight) of course you’re going to make gains faster.

Perhaps, I’m overstating Kotler’s disdain for mainstream athletics, but that’s what happens when one uses a national hero as a set up to show how much more awesome a relatively unknown skateboarder is (among skateboarders Way is extremely well-known but he’s not a household name as the Olympian was–at least for a short time in the late 90’s.) I suspect that Kotler was just trying to convince a general audience that the athletes he’s speaking about aren’t pot-smoking knuckleheads who are as likely to be seen on America’s Funniest Home Videos crushing their nads on a handrail as setting a new world record. These men and women are serious people engaged in serious activities, and they give it their all. They do deserve more respect for that than they are probably given by broad sectors of the populace. Perhaps, the importance of what these folks are achieving does need to be conveyed because the demographic that reads books and the one that follows extreme sports probably has wide wings of non-overlapping area. (I’m not saying skateboarders are illiterate or bookworms don’t skate–just that the Venn diagram has substantial areas of mutual exclusivity.)

As I indicated above, in each chapter we get both some insight into the nature of the flow and its triggers and stories of adventure / extreme athletes that serve as examples of what’s being discussed. In chapter 2 we learn what the flow looks like in terms of brain waves (i.e. high theta/low alpha, or between meditation and a relaxed / resting state of wakefulness.) In chapter 3, we learn about the neuroanatomy of the flow in terms of what areas of the brain it lights up, and what areas shut down–which is more important to flow states. In chapter 4, we learn about the neurochemistry of the flow and that a cocktail of dopamine, norepinephrine, endorphins, anandamide, and serotonin makes up the chemistry of flow, but, critically, not so much with the adrenaline. The subsequent chapters deal with triggers of the flow, and what conditions best set up achievement of this state of mind.

Chapter 9 stands out as an important, but quite different, portion of the book. It deals with the downside (or dark side) of the flow. This has a lot to do with the fact that the aforementioned internal substances (and the flow state in general) are quite addictive. While it’s unfair to say, and unlikely, that the extreme athletes Kotler writes about (i.e. the ones at the top of their games) are drug addicts as some might assume of skate boarders, snow boarders, and the like, it may not be unreasonable to say that they have a kind of monkey on their backs—albeit a perfectly legal one rooted in their own neurochemistry.

As I’ve said, I recommend this book for anyone who is interested in this state of mind. One needn’t be interested in extreme sports to get a lot out of the book.

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BOOK REVIEW: The Wild Life of Our Bodies by Rob Dunn

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The Wild Life of Our Bodies: Predators, Parasites, and Partners That Shape Who We Are TodayThe Wild Life of Our Bodies: Predators, Parasites, and Partners That Shape Who We Are Today by Rob Dunn

My rating: 4 of 5 stars

Amazon page

Dunn’s book addresses a host of intriguing questions such as:

-Why are there diseases that disproportionately attack those in the richest parts of the world while being almost non-existent in poor countries?
-Why is obesity at epidemic proportions among modern humans?
-Why—while people have diverse tastes overall—do there seem to be universal preferences for sweet, salty, and fatty foods?
-Why are so many people’s lives wrecked by constant stress and worry?
-Is the Appendix really a vestigial organ with no apparent purpose?

As the subtitle suggests, this book is about the role that other species have played in human evolution and the way we look, behave, and think today. The message of The Wild Life of Our Bodies is that humanity’s proclivity to see itself as an island–uninfluenced by other species–has its cost.

The book is popular science–approachable to a layman but with the usual disdain for gratuitous assertions and shoddy reasoning that define the scientific though process. That being said, Dunn does put some editorial opinion out there in ways that might appear as fact in a slipshod reading. The most prominent example being Dunn’s suggesting that what best defines humanity is not our intelligence or ability for abstract representation (or even our physical appearance), but that we are the only (first?) species that has killed other species off not purely of self-defense or for food, but to exercise control over our ecosystem. I doubt this would strike a majority of impartial scientists as a fair and unbiased way to define humanity. Granted, this point not what The Wild Life of Our Bodies is about, and whether one thinks this it is fair or not is not critical to whether one will find the book to be of value. However, the idea (and the fact) that humans have zealously killed off other creatures is certainly relevant to the discussion at hand.

If “terraforming” is the term for how an alien race might environmentally engineer Earth to make it suitable for them to live here, perhaps we could call humanity’s assault on other species “bio-forming” of the planet—choosing a roster of species that strikes our fancy. All the time humans were trying to make ourselves more comfortable by getting rid of inconvenient species, we remained ignorant to the downside.

Dunn covers a broad range of mismatches between who we are evolutionarily and how we live in the modern world. The Wild Life of Our Bodies suggests that, like the pronghorn antelope, humans are in many cases over-designed because of the loss of species (parasites, predators, symbiotes, etc.) that helped to make us who we are today. (One question that once puzzled biologists was why pronghorns were so much faster than every species they faced.)

While it sounds good to be over-designed (at least relative to the alternative), it’s not without cost. In our case, we had guts that were supremely adapted to having parasites, but the lightning fast (on an evolutionary timescale) elimination of those parasites has left us with bodies that attack a non-existent enemy and this has resulted in a number of new diseases. We are used to diseases that succeed in the poorest—and, hence, least hygienic areas– but disease that mostly attacked in the cleanest places on Earth have puzzled us for some time. Crohn’s disease is a prime example. “Rewilding” (i.e. putting parasites back into) the guts of Crohn’s patients has shown positive results.

Dunn lays out a couple of the theories as to how the loss of our intestinal bacteria may result in a number of first-world ailments. Interestingly, some of these diseases aren’t even digestive in nature, and might seem to have no logical connection to gut bacteria. However, our body’s systems are a system-of-systems—i.e. they are integrally linked. One issue is that some parasites have been able to mask their presence, and our bodies have learned to present a heightened response to account for this veiled threat. Today our systems can’t tell the difference between our squeaky clean guts and a gut full of these sneaking parasites so it drops the immune system version of an A-bomb.

This is one example of why some diseases don’t exist in the third-world where the body knows what parasites it’s up against. One might say, “Yes, but these ailments of over-reactive systems can’t be as bad as the effects of the parasites.” That’s often not true. Most people with internal bugs (we all have them to some degree), don’t even realize it. The fact that people with Crohns’ are willing to have predators implanted in them speaks to this issue.

There has been concern for years about downside of the rampant use of anti-bacterials, antibiotics, and antiseptics, and this is a topic Dunn addresses as well. For example, there seems to be little evidence that such agents in soap do any particular good, but they decidedly do bad (encouraging drug resistant species.)

Perhaps the single greatest change in the nature of homo sapiens life resulted from the agricultural revolution, and Dunn delves into how this seminal event changed our bodies. With paleo-dieting all the rage, it will come as no surprise that there have been some major changes to the human diet since our hunter-gatherer ancestors roamed the Earth. Once again, we have bodies built on an evolutionary timescale, and they don’t necessarily cope well with our new diets.

One problem is that we have strong hardwired drives for foods that were a rarity in our species’ past, but which we now produce in abundance. For example, we eat far too much refined sugar because our bodies are wired to love sweet, but that kind of food was rare to our pre-agricultural ancestors. Hence we have the existence of diabetes, and its greater prevalence where high-sugar diets are common. Many people are also saddled with an evolutionary advantage to store fat because their ancestors come from a clime where food was not abundant year round. The problem is that now there’s a grocery store on every corner and this once great advantage is contributing to burgeoning waistlines.

I gave this book a high rating on the grounds that it presented a lot of food for thought, and that’s what I most value in non-fiction. Some of the theories may turn out to be incorrect, but this book offers one a lot to think about and clear explanations of the bases for what can otherwise seem a little outlandish. There is also some wit in places that contributes to heightened readability.

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BOOK REVIEW: The Science of Yoga by William Broad

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The Science of Yoga: The Risks and the RewardsThe Science of Yoga: The Risks and the Rewards by William J. Broad

My rating: 3 of 5 stars

I brought a great deal of interest and enthusiasm towards this subject as I began reading this book. As I proceeded to read, my feelings about The Science of Yoga became much more mixed. At its best, the book shows the state of scientific research on yoga and crushes myths that are deeply ingrained, and it points out risks of which yogis and yoginis should take notice. At its worst, it is sensationalism run-amok–suggesting hugely expensive solutions to issues that are either relatively small problems or that the author fails to prove are really problems at all. Put more simply, at its best it’s outstanding, but at its worst it’s tripe. What I will say about this book is the same thing that its author says about yoga, which is that—on balance—it does more good than harm.

The book is arranged into seven chapters, each of which discusses the scientific research on a different dimension of controversial beliefs about yoga. These include the historic claims of supernatural yogic abilities, the issue of whether yoga increases cardiovascular health, the role of yoga in mental health and well-being, the safety of practicing yoga, the role of yoga in healing, the sexual claims of yogis, and whether yoga enhances creativity. It is written in a scholarly format, heavily end-noted and with bibliographic citations. There is front matter giving information about key people, time lines, and yoga styles in outline form.

In an afterword, Broad points out that this has been his most controversial book to date. I can see why, but, to be fair, I’m sure much of the criticism is unfairly based on a failure to read the book or a desire for the author to treat many of yoga’s mythical aspects as science (as many of its practitioners do.) The former problem was exacerbated by the fact that a single chapter excerpt was published in the New York Times as a teaser for the book. Designed to spark controversy (always good for readership), it was one of the most negative of chapters—the one dealing with yoga injuries. Some who took umbrage probably didn’t realize that Broad is a yoga practitioner, and that there are chapters that are overwhelmingly positive on yoga (e.g. the chapter on “mood” which deals with yoga’s influence on psychology has mostly great things to say about the discipline.) While all of the chapters combine a mix of good and bad news, one comes away from some of them seeing a positive picture of yoga and others with a negative one. In the first half of the book it seems as though chapters may have been arranged to alternate positive and negative dimensions.

Of course, there will also be people who are outraged because of the discussions of the debunking of the con games of their beloved yogis, or for a failure to discuss the critical importance of things like Chakra fluffing. It should be noted that Broad doesn’t deride or mock such spiritual beliefs, he more or less ignores them beyond the occasional off-hand mention—as one would expect in a book about science.

My primary criticism with The Science of Yoga is a common one consideration of problem-solving utilizing public policy (not just with respect to yoga), which is to become so impassioned about a problem that you lose all sight of cost-benefit considerations or the negative feedback effects incentivized by your “solutions.” The problems about which Broad gets so exercised as to suggest an overhaul of yoga as we know it, largely fall into two categories. First, there are problems that are exceedingly rare but catastrophic for in individual involved. This is exemplified by the apparent heightened incidence of strokes among individuals engaged in certain inversions (e.g. a shoulder stand in which the neck is under compression.)

In an interesting turn away from science, Broad makes assumptions in the face of lack of evidence about the incidence of stroke in yoga practitioners. He assumes that yogis have at least the same incidence of stroke due to vertebral artery injury as the general population because of inversions and other yogic activities that put pressure on blood vessels in the neck. He does make clear that it’s just a guess, but one could equally well speculate that those who practice yoga suffer a diminished rate of such strokes because of greater flexibility and strength in the neck. (For the most part the human body is an anti-fragile system, i.e. it grows stronger when subjected to stresses—up to a point—than when shielded from stresses.) While he does call for increased study of the issue, he’s also simultaneously calling for expensive reforms. In essence, he’s calling for a solution before awaiting the evidence that there’s actually a real problem. Stroke is the 800 pound gorilla of the risks the Broad writes about in terms of damage, and so it’s not surprising that he paints the risk in ominous terms. He criticizes the Yoga Journal for dismissing it as a “minuscule number of cases”, but even taking his estimate of 300 (and realizing it could be much lower and is compared to 800,000 cases of stroke per year in the US according to the CDC) “minuscule” does not sound that out of line in a country of 314 million people.

Second, there is the issue of bad information being spread by yoga teachers and authors either because they don’t know any better or because they have an incentive to deceive. This is exemplified by the widespread notion that yoga (and particularly pranayama— breathing exercises) increases one’s cardiovascular fitness. Is it wrong? Yes, but it’s not clear that this propagation of bad information has hurt anybody. That may sound harsh, but—think about it–many people lead long and fruitful lives believing things that aren’t true. Now you may say, “Yes, but people who believe the Earth is flat can’t get hurt believing that, but yoga practitioners can be hurt by wrong information.” I would agree that some wrong information could be damaging, but consider the example given, which–I might add–is one of the main thrusts of Broad’s book. If it were the case that many people got fat because they thought yoga would help their cardio when instead it decreased their metabolism (as the evidence suggests it does), then no one would believe the myth. The idea wouldn’t have the strong hold that it does. What happens more often is that people either lose weight because they stress and eat less or they stay the same—either way they haven’t been hurt any more by bad information. Even if someone came to yoga to lose weight and gained some, they will abandon yoga and go to Zumba or Taebo with greater flexibility and probably a diminished risk of injury for having done yoga.

By spreading information about the risks and the state of scientific understanding of them Broad is doing good work. However, he goes on to suggest that we need lots of bureaucrats to monitor and license yoga and that we need much more rigorous requirements for yoga teachers than the 200 or 500 hour Yoga Alliance certifications that currently exist (or the teaching certificates issued by the gurus or teacher trainers of various styles of yoga), and herein lies two problems. It’s not clear that a problem exists to merit such an expensive solution.

First of all, many of the worst cases that he points out were people engaged in questionable practices on their own. I’m sorry for my frankness, but you can’t regulate stupid out of existence. There was one kid who sat for hours in Vajrasana (sitting on haunches), one who fell asleep in a forward bend, and another who had a stroke after holding a shoulder stand on a hard surface for hours. Now, my experience may not be as extensive as others, but I’ve attended yoga classes in the US, India, and Thailand. I’ve had teachers tell me to hold a pose for 5 deep breaths. I’ve even had teachers tell me to hold a pose for 10 deep breaths. No teacher has ever said to me, “Hold that pose for four hours or until you have a stroke, whichever comes first.” Even teachers with a couple hundred hours of instruction and a couple hundred more of experience don’t—as a rule—give patently stupid advice. (To the degree that there are rare exceptions, thinking that no teacher would ever again give a piece of bad advice if they just all had PhDs is a little presumptuous.)

The major problem with Broad’s suggestion of a need to overhaul the system and install bureaucratic gatekeepers and overseers and to make teachers jump through vastly more educational hoops is that it increases the cost of doing yoga with a teacher. Now, I know that yoga is associated with relatively affluent people, but—believe it or not–there are yoga practitioners who aren’t SUV-driving, Abercrombie&Fitch-wearing, maid-hiring suburbanites. If the monthly cost of attending yoga class goes from tens of dollars to hundreds of dollars because every yoga teacher has to have a PhD in Kinesiology and every studio has to comply with the extensive regulations and licensing fees of the newly formed Department of Yoga Management, then many people who are happy with the level of instruction they are currently getting are going to be emulating books and videos and injury rates could actually go up.

Another example of a “problem” that is not definitively shown to be a problem is Broad’s extensive criticism of an author of a popular book on yoga (i.e. Larry Payne) for using a Ph.D. designation that was from a southern Californian diploma-mill. While there is something objectionable about putting a PhD behind one’s name that wasn’t justly earned, it’s not at all clear that this was a problem. One expects to hear how Larry Payne left a pile of wrecked souls in his wake. However, while Broad devotes pages to ridiculing Payne for putting PhD after his name, the few mentions of the Payne’s interactions with others suggest that he helped them get healthier (e.g. Dr. Ursatine) and that he furthered the state of his professional field. The implication being that the credential matters vastly more than the individual’s experience and diligence. Interestingly, Dr. Fishman (for whom Broad has nothing but kind words—presumably because he holds an MD) is quoted as speaking glowingly about Payne and his contributions to the field.

Another example of sensationalism can be seen in the chapter on sexuality. While we would expect this chapter to be entirely about the claims of yoga being able to enhance one’s sex life, a fair amount of it is devoted to pointing out instances of lecherousness among yogis. I’m not saying that it’s bad to point out bad behavior of gurus in terms of harassing or molesting their female students, but unless there’s some evidence that this inclination is tied the sexual practices of yoga, this would seem to be the wrong venue for the discussion. In other words, if yogis are no more lecherous on the whole than other teachers or coaches, then it would seem that mention of this issue is just to titillate. If yogis are uncontrollable horn-dogs because of yogic practices, then fine, but you’ve got to establish that there’s evidence for that somehow.

Overall, I’d recommend that individuals interested in the scientific literature on yoga read this book. It provides a good overview of the literature, and is well-cited. The books weakness comes from insisting that a large number of mole hills are really the Himalayas. These mole hills can be addressed with education, but can never be eliminated. Suggesting we upend the apple cart to produce “solutions” to marginal problems is ridiculous. We may think a world in which there was never another fatal traffic accident would be nice, but I assure you we would not want to live in the world in which all the actions were taken necessary to achieve said goal. If one compares the extrapolated estimates of hospital visits for yoga injuries, they are really quite few and we have no reason to believe that the vast majority aren’t life-threatening or permanently disabling.

For me it would have been a great book if it laid out the risks and rewards, and suggested caution. Of course, then it probably wouldn’t have gotten any more attention than the many books that already exist on the subject of yoga injuries, so maybe some good can come of Broad’s implication that going to the yoga studio is akin to storming the beaches at Normandy and that we need to stop the horrors or yoga practice.

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DAILY PHOTO: Eyespot Mimicry: or, Evolution Only Gets One So Far

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Taken in January of 2014

Taken in January of 2014 in Bangalore, India.

I’ve seen butterflies and moths that had patterns evolved to mimic the eyes of other animals at a butterfly house in a botanical gardens, but this is the first time I’ve seen it in the wild–which is to say in the stairwell of our central Bangalore apartment building. This moth thought the perfect place to exploit its owl-like eyes and “feather pattern” would be on the white marble floor inside a building. Evolution only gets one so far.