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378 pages, Hardcover
First published January 1, 2018
“Conscience is the inner voice that tells us someone might be looking.”
“We should question the automatic assumption that differences between the sexes necessarily imply discrimination against women. And we should ask what right we have to override people’s preferences regarding their own lives and careers in order to enact our preference for a gender-neutral world.”
“And many [humans] spend hour after hour and day after day sitting in a peculiar trance-like state, staring at flickering images on flat screens – images, for example, of simulated events they know full well never happened, of other human beings mating, or of baby mammals behaving incompetently.”
This book is about the strangest animal in the world – the animal that’s reading these words and the animal that wrote them: the human animal.This is how the book starts, strong and to the point – totally loved it!
To say that human beings are interesting is an understatement. We’re freaks of nature! We’re blobs of matter that fall in love with each other. […] We’re mortal beings that, alone among the animals, know that we’re going to die one day and flee in terror from this knowledge. We’re bald apes that can think each other’s thoughts simply by making noises at each other. […] We’re carnivores that sympathize with our food. We’re biological mechanisms designed to pass on our genes, but which fritter away our time playing games and weaving a web of fantasy around ourselves. We’re clusters of chemical reactions that contemplate deep truths about the nature of reality. And we’re little pieces of the Earth that can get outside our mother planet and venture to other worlds. How can we explain how such a bizarre creature came to exist?And here’s something I’ve also read in another study about breast cancer:
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Natural selection has all the time in the world. Just as a mere trickle of water, given sufficient time, can carve the Grand Canyon out of solid rock, so too natural selection, given sufficient time, can fashion new biological structures out of old. […] And not only does natural selection create adaptations, in the fullness of time, it carves out new species from the gene pools of existing ones.
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In his later years, Darwin often described natural selection as “the survival of the fittest” – a phrase he borrowed from the philosopher Herbert Spencer. […] Some organisms happen to have traits which boost their chances of surviving and reproducing.
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Samuel Butler’s famous aphorism, that the chicken is only an egg’s way of making another egg, has been modernized: the organism is only DNA’s way of making more DNA.
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Herbert Prochnow once described courtship as “the period of dating during which a girl decides whether she can do any better.”
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As Mignon McLaughlin observed, “A nymphomaniac is a woman as obsessed with sex as the average man.” […] Even today, there’s a sexual double standard in the West: Men who sleep around are viewed as heroes or lovable rogues, whereas women are viewed as sluts and “not marriage material.” As Joan Rivers put it, “A man can sleep around, no questions asked, but if a woman makes 19 or 20 mistakes she’s a tramp.” Again, this is surely going to have an impact on women’s sexual behavior. It’s not evolution; it’s just basic human rationality. People weigh up the costs and benefits of casual sex, and act accordingly.
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Love has many adverse side effects, from poor concentration to obsessive thinking. It’s a common cause of divorce , as when a husband or wife falls in love with someone else. And it can provoke a wide range of pathological behaviors, from stalking to suicide to murder. The clinical psychologist Frank Tallis once suggested that being in love is the closest most people come to mental illness. […] Love also has many positive effects. It can turn ordinary people into heroes, inspire self- sacrifice worthy of a non- reproductive worker insect , and fuel creative achievements spanning from embarrassing teenage poetry to the majestic Taj Mahal. Love is a double- edged sword, and it’s not at all obvious whether, on balance, the sword has brought more joy or more misery to the world.
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As the economist Tim Harford summed it up, if you want to maximize your personal happiness, the optimal number of children to have is zero… and if you absolutely must dabble in procreation, the least depressing number is two. Don’t take these numbers too seriously; the exact estimates vary from study to study, and there’s always plenty of variation from person to person. The stable finding, though, is that having kids doesn’t reliably make people happy, and that for a fair number of people, it leads to a slump in happiness. Parents swear blind that they love having kids and that they love spending time with them. But careful research suggests that many parents enjoy their time with their children only slightly more than they enjoy taking out the trash or commuting, and that they generally prefer watching TV.
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Monogamy is the Western custom of one wife and hardly any mistresses . — H. H. Monro
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Memetics is based on the concept of the “meme,” which Dawkins introduced in his 1976 bestseller, The Selfish Gene . Roughly speaking, a meme is an idea. Less roughly, it’s a unit of culture. When people give examples of memes, they tend to fixate on quirky pieces of contagious culture: jokes, recipes, writing “clean me” in the dust on a dirty car, catchphrases, catchy tunes, ways of tying a knot, ways of tying the knot, viral Internet images, and so on. But the meme concept is much broader than that. It embraces anything and everything that can be passed on via social learning, from the trivial (facial expressions, mannerisms) to the historically momentous (agricultural techniques , political and religious ideologies).
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It’s important to stress, however, that in many ways, cultural evolution is very different from its biological cousin. For multicellular organisms like ourselves, genes are transmitted almost exclusively from parent to offspring. Unless you’re a bacterium, you can’t pick up genes from your friends. But you can pick up memes from your friends, or from your children, or from anybody else. Indeed, in a world of books, TV, and the Internet , you can even pick up memes from the dead. Another difference between biological evolution and cultural is that, although there’s not much sharing of genes between different multicellular species, there’s often a lot of sharing of memes across different “species” of culture. English, for instance, is classed as a Germanic language, but much of its vocabulary comes from Romance languages such as French and Latin. In a sense, modern English is a linguistic mongrel: a hybrid of Germanic and Romance languages. In the same sense, rock music is a hybrid of a variety of musical genres, including blues and country, gospel and jazz. And neither rock music nor English is exceptional. The sharing of code across species, though rare in multicellular organisms, is the norm in the cultural sphere.
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But while the differences between biological and cultural evolution are significant, the similarities are often quite startling. Arguably, the most startling is the fact that, like plants and animals, cultural products can often be arrayed on a family tree. Languages are the best example. Like biological species, languages descend from other languages, and – at least within the major language groupings – any two languages share a common ancestor if you trace it back far enough. Also like biological species, any two languages may be more or less closely related. […] The fact that it’s possible to place these cultural entities on family trees is important, because family trees are a telltale sign that the entities in question arose through a process of descent with modification… in other words, that they evolved.
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Although we’re clearly smarter than chimps , we’re nowhere near as much smarter as an alien scientist might surmise from comparing our cultural achievements (e.g., putting people on the moon) with theirs (e.g., using rocks to crack open nuts or sticks to fish for termites ). As individuals, we’re probably closer to the nut- cracking, termite- fishing end of the spectrum. If you doubt this, imagine being marooned in the jungle with no relevant knowledge. At a push, you might figure out how to obtain a little food. But you’d never figure out how to build a rocket ship and get to the moon. […] The developmental psychologist Michael Tomasello dubbed this progression the cultural ratchet. Extended across time, the cumulative effects of the ratcheting process are astonishing. I remember once watching a David Attenborough documentary in which an orangutan rowed a boat down a river. At first, it struck me as anomalous: Here was this animal skillfully piloting a vehicle it could never have invented itself. But then it occurred to me that human beings are in exactly the same boat, metaphorically speaking. In even the simplest human societies, people use tools they could never have invented themselves. And in our modern age, we routinely use technologies so complex that most people don’t have the slightest clue how they work. It’s as if we’ve appropriated the technology of an advanced race of aliens after they mysteriously vanished – except that the aliens were never really here. All of it came from us. […] Cumulative culture is the ultimate time- saver. Because of cumulative culture, we don’t need to reinvent the wheel each generation – quite literally. We don’t each need to invent calculus because Newton and Leibniz did it for us. We don’t each need to have our own Eureka moments to understand fluid dynamics; we don’t each need to have an apple fall on our head to understand gravity ; and we don’t each need to dream of a snake eating its tail to understand the structure of the benzene molecule. All we need is a library card, a good teacher, or access to the Internet . We can then download into our brains some of the achieved knowledge of the species. This subsequently becomes the starting point for the next round of innovation.
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One of my favorite animal anecdotes is about orangutans at a sanctuary in Borneo. One day, a group of orangs slipped into the kitchen and stole a pot. They made a big pile of rocks, placed the pot on the rocks, and then sat in a circle around it, waiting for the pot to give them soup. They were attempting to replicate what they’d seen humans do a hundred times before. This shows just how smart orangutans are – and also just how dumb! But how much smarter are we? Whenever we copy the style rather than the substance of a high-status person – whenever we wear the same shoes as a sporting hero, for instance, or try to emulate a rock star’s debauched lifestyle – we’re really not so different from the orangs around the pot. Advertisers exploit this chink in our armor when they pay celebrities to endorse their products. There’s no good reason to think that skill on the football pitch goes hand-in-hand with skill in choosing the best brand of underwear or the best spray deodorant. But otherwise rational people act as if it does.
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Various scholars, including David Sloan Wilson and Ara Norenzayan, have argued that religions are shaped in large measure by cultural group selection. Just as the function of sharp teeth is to tear apart prey, the function of religions is to knit together collections of individuals into socially cohesive groups. This might help explain some central features of the world’s religions. Among the most important, in Norenzayan’s view, is the widespread belief in Big Gods. Big Gods are powerful supernatural beings which keep track of what we do and punish us if we step out of line. The belief in such beings is not a human universal; it’s found only in large-scale societies. And that’s because it’s only in large-scale societies that we need them. As the evolutionary psychologist Robin Dunbar has argued, for groups of one-to-two-hundred people, our social instincts are sufficient to keep society running smoothly. We know everyone in the group, we can keep tabs on what everyone’s up to, and we can generally keep people in line with everyday social tools such as approval and opprobrium. But the moment groups get much bigger than this, people start to encounter strangers and near-strangers at an unnaturally high frequency, and the usual social tools no longer do the job. Social cohesion starts to erode and groups start to break down… unless, that is, new institutions step into the breach and foster group cohesion where our social instincts fall short. […] Big Gods aren’t the only way to keep people on the straight-and-narrow. Some traditional societies opt instead for the doctrine of karma and reincarnation , and modern secular societies opt for police, law courts, and CCTV cameras.
For most of our history, women spent the bulk of their reproductive years either pregnant or breastfeeding. Women don’t menstruate when they’re pregnant, and they tend not to menstruate when they’re breastfeeding either, at least not in hunter- gatherer conditions. The net result is that, until recently, most women had only a hundred or so menstrual cycles in their lifetimes. Things are very different today. Women hit puberty earlier, have fewer pregnancies, and spend a smaller fraction of their lives nursing their young. They therefore have many more menstrual cycles than their ancestors: as many as four hundred. This is more than their reproductive systems are designed for, and it exposes them to unnaturally high levels of ovarian hormones and unnaturally frequent hormonal fluctuations. This in turn increases women’s risk of breast cancer – as well as conditions such as anemia and endometriosis. These maladies were almost unheard of until recently. Like obesity, they’re essentially diseases of modernity, or what are sometimes referred to as mismatch diseases.
"Evolutionary mismatch provides a fairly straightforward explanation for some of the crazy behavior that so puzzled the alien scientist. This includes the fact that so much of the food we pour down our gullets is so bad for us. Our diet is obesogenic: It makes us fat. It’s also carcinogenic, diabetogenic, and cardiovascular-disease-ogenic. Why are we so deeply attracted to foods that, in a very real way, are unfit for human consumption?
The answer is that our appetites evolved in a food landscape quite unlike the one we inhabit today. As Michael Power and Jay Schulkin put it, “We evolved on the savannahs of Africa. We now live in Candyland....”
"...Mismatch explains another tendency that puzzled our alien friend: Why aren’t our fears properly apportioned to the risks in our environment? Why, when we decorate our houses for Halloween, do we opt for plastic snakes and spiders, rather than plastic cigarettes or condoms – things that are now much bigger threats to life, limb, and reproductive success? And why, when we try to teach our children to fear roads and electrical outlets, do they stubbornly insist on fearing snakes and monsters instead?"