Tag Archives: Biology

BOOK REVIEW: Why We Run by Bernd Heinrich

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Why We Run: A Natural HistoryWhy We Run: A Natural History by Bernd Heinrich
My rating: 5 of 5 stars

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This book is actually several different books woven together. It’s part autobiography of the author’s running life, it’s part a study of comparative biology between various creatures with an endurance bent and humans, it’s part an examination of the evolutionary biology of humanity’s proclivity to run, and it’s part guide to preparing to engage in ultramarathons. Often I pan such books as being unfocused, ill-planned, and—most often—attempts to whip an article’s worth of material into a book length piece. However, Heinrich keeps it interesting enough that I don’t feel it necessary to level these criticisms. Still, my first warning to readers is that one has to read on for quite a while before one gets to the book that one thought one bought—i.e. one that answers the title question of “why WE (i.e. people in general and not the author specifically) run.” In short, you’ll need to have an eclectic set of interests to get through the whole book, but some may find reading only part of it gives them all they wanted from the book.

It should be noted that the book is on its second title. The original title was: “Racing the Antelope: What Animals Can Teach Us about Running and Ourselves.” The author explains in the front matter why the original name was changed (apparently some loud and obnoxious writer had a similarly titled book on a different subject and whined about it.) Changing the title wasn’t required because: a.) titles cannot be copyrighted, and b.) it wasn’t exactly the same title anyway. Still the new, more succinct, title may lead one to expect a succinct book, which this isn’t so much.

Some readers will enjoy Heinrich’s writing style; others will find that it ventures too far into flowery territory on occasion. I did enjoy it. However, I can see how a reader might find some of the descriptive sequences to be excessive–particularly toward the beginning of the book.

While there’s some overlapping and interweaving, one can think of the book in three sections. It’s written in twenty chapters. The first six tell the author’s story of getting into running and his youth. The next eight chapters deal in comparative and evolutionary biology. In general, these chapters look at the biology of other creatures as they pertain to said animals’ ability to engage in running (or activities that are like running in that they involve endurance of muscles and the cardiovascular system.) Also included in this section is the evolutionary biology of humans as it relates to becoming a species of runners. This is the core of the book and was the most interesting section for me. In it, Heinrich considers the endurance activities of insects, birds, antelopes, camels, and frogs. Each of these has a particular relevance. For example, camels are masters of endurance under harsh conditions. Frogs tell the story of the difference between fast and slow twitch musculature (relevant to sprinters versus distance runners.) Antelopes are, of course, the exemplars running in the animal kingdom, but the nature of their running is so different from that of humans (i.e. making quick escapes versus pursuing wounded prey.) The last six chapters can be seen as a guide to preparing for ultramarathon races, but it’s also a continuation of the author’s self-examination of his running life from the time he began ultramarathoning.

I’d recommend this book for readers who are interested in the science of human performance. It’s well written, and the insights it offers into the biology of other animals are fascinating. Whether you read the whole book or just the part that pertains to your interests, you’ll take something away from this book.

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BOOK REVIEW: Wired for Story by Lisa Cron

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Wired for Story: The Writer's Guide to Using Brain Science to Hook Readers from the Very First SentenceWired for Story: The Writer’s Guide to Using Brain Science to Hook Readers from the Very First Sentence by Lisa Cron

My rating: 5 of 5 stars

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There are countless books offering advice to writers. Some are good. Some are not. Good, bad, or ugly, few of these books offer anything new beyond particularly artful (e.g. humorous or poetic) explanations or superior examples. In other words, if you’ve read five writer’s guides you’ve read five thousand. Cron’s book is the rare guide worth a read even if you’ve read a hundred other such books. It’s not that Wired for Story offers radical or novel advice on story building (its writer’s tips are orthodox.) It’s the way this book couches the arguments for what can admittedly be hackneyed advice. As the title suggests, Cron’s book is about how our brains are wired to love stories–as long as said stories contain certain attributes that the brain finds appealing. (Conversely, there’s a reason why books that go wildly off the reservation with “experimentalism” are doomed.)

While I’ve read many a book on writing, I picked up Wired for Story more out of an interest in the subject of the neuroscience of story. The book doesn’t delve deeply into the science, but it does cite leading thinkers in the field as well as providing a good layman’s overview of the neuroscientific principles that inform the book’s tips. Cron’s background is in publishing and her bona fides to write this book are as someone who came from a career reading and rejecting / accepting manuscripts. However, I believe she did a good job of laying out science.

The central idea is that humans love stories because the narrative structure allows people to simulate a nasty chain of problems without suffering the real world consequences. The brain loathes uncertainty and randomness, and loves whenever it can learn about how to face a problem or make sense of the world. This is why we love conflict, tension, and an unrelenting unfolding of worst case scenarios in our stories even though we tend to hate those characteristics in our own lives. This results in both the tried advice to keep putting the protagonist through the wringer, and the qualifications that a writer should do so in a way that is believable (our brain’s BS-detector is ever on) and which will eventually force the protagonist to change. Cron offers a definition of story that has the usual elements: “A story is how what happens affects someone who is trying to achieve what turns out to be a difficult goal, and how he or she changes as a result.” As with many guides, the definitions of plot, the protagonist’s issue / goal, theme, and tone are elaborated at length—as well as being differentiated because these topics tend to be confused by neophytes—often resulting in a failure to clarify one or more of them.

Stories also give us an opportunity to anticipate what others will do, and forecasting the behavior of others gives one a nice little dopamine dump. The ability to foresee what others will do has always been a powerful evolutionary advantage, and those who did it better passed on their genes more than their oblivious counterparts. Owing to this idea, there is a great deal of advice about what should be in the book (only what is relevant), and how it should be revealed (in a way that eschews attempts to play “gotcha” with your readers.)

One may wonder why I’m so pleased with a writer’s guide that gives common advice about writing–just because it explains said tips in terms of evolutionary biology. The answer is that it’s far easier to keep these lessons in mind when they’re held together by a logic rooted in what all readers have in common (e.g. conscious and unconscious minds, emotions, instinctual drives, etc.) For example, knowing why readers hate an overly simple resolution for a problem that’s presented as insoluble (i.e. robbing them of dopamine reward for figuring it out) helps one better recognize this pitfall in all its forms and to avoid it. Such an approach allows for a deductive approach and is far more useful than having memorized “avoid deus ex machina” as a disparate tip that’s attached to a specific example. In short, it’s both easier to remember and broadly implement these ideas when one understands the rationale from the ground up.

Beyond the reason in the last paragraph, I enjoyed this book for reasons that have little to do with its advice to writers. While I now know that there are other books on the evolutionary biology of story that deal with the subject more from a scientific perspective (while I haven’t read it yet, you might try this book), this was the first book that I stumbled across on that topic. And, it’s a topic that’s well worth understanding whether you’re a writer or not. No matter what one does, understanding the universal appeal of a story can be beneficial, whether it’s in the context of teaching, parenting, or business.

I’d recommend this book for writers—particularly those who think about the world in scientific terms. Beyond writers, if you have cause to construct or use stories in your life—or suspect you should—you can benefit from this 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

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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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