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Unweaving the Rainbow by Richard Dawkins (1998)

Here is another analogy… (p.12)

Although this book is over 20 years old, the issues it addresses (the anti-scientific tendency of much traditional literature and the inappropriate use of poetic writing in bogus pseudo-science – versus the hard scientific fact and clear scientific thinking Dawkins promotes) are still very current, and since Dawkins is still writing books attacking non-scientific ways of looking at the world (such as his most recent tome, Outgrowing God, published just last year) I think it’s still worth reviewing this one as an analysis of his overall style and approach.

The aim

The full title is Unweaving the Rainbow: Science, Delusion and the Appetite for Wonder and the book’s purpose is simple: For thousands of years humans have written poetry or concocted religious myths and symbols to explain the puzzling world around them. But (Dawkins says) the scientific worldview as we now have it explains more or less everything about the world around us from bacteria to supernovas and, if properly understood, is far more beautiful and inspiring than the poetry, myths and legends it supersedes.

My advice

However, in my opinion, if you want to be inspired, watch a David Attenborough documentary about the natural world or a Brian Cox one about the stars, because this book is a hilariously silly, shallow, ragbag of random quotes, fragments of science mixed up with countless personal anecdotes, snippets from newspapers or TV and, above all, a relentless stream Richard Dawkins’s pet peeves and trite opinions.

Do not read this book.

Dawkins shares his opinion of modern journalists (lamentably anti-science)

Dawkins opens the book with a sustained attack on a shopping list of contemporary authors who have written disparagingly about science, including Bernard Levin (who once wrote an article specifically about Dawkins God, Me and Mr Dawkins 11 October 1996 – hence the enmity), Simon Jenkins, A.A. Gill, Fay Weldon (author of a ‘hymn of hate’ against science in the Daily Telegraph) and so on and so on.

Dawkins quotes articles in the newspapers, or letters he has received, or questions he gets asked at the end of his lectures, or anecdotes about students of his, to demonstrate that anti-scientific prejudice and ignorance is everywhere – There are creationists under the bed and anti-evolutionists hiding in the closet. It isn’t safe to turn on the TV or open a newspaper without someone spouting unscientific rubbish or promoting astrology or showing the deepest scientific illiteracy. Fools! Knaves! Dawkins has no patience with error.

This is dramatically, profoundly, hugely wrong. (p.90)

Dawkins shares his opinion of British poets (lamentably anti-science)

And then – oh dear, oh dear – Dawkins takes it upon himself to be the judge of a raft of classic poets including Keats, Coleridge or Wordsworth, Blake or Yeats or Lawrence.

Dawkins has located quotes from all of these luminaries lamenting the ‘death of romance’ and the role science has played in ‘dis-enchanting the world’ so, as usual, Richard loses no time in telling us that they were all dead wrong in thinking science dis-enchants the world: if only they’d understood modern science, they’d have written poetry ten times as good!!

Dawkins then goes on to prove that he has absolutely no feel for poetic writing or for the luminous quality of poetry:

  1. by the way he quotes schoolboy tags and the most obvious ‘greatest hits’ moments from the most obvious Great Poets
  2. by the way he treats poems as rhythmic verse i.e you can do a prose summary, and then evaluate them on whether or not they show the ‘correct’ attitude to the scientific worldview
  3. and by the way he has rummaged through the diaries and letters and table talk of the Great Poets to find quotes of them stating anti-scientific or anti-rationalist opinions

Which he considers case closed. He cannot entertain the idea that poetry might not be written to put forward clearly defined and logical points of view, but might be an alternative way of perceiving and expressing the world and what it is to be human…

He refers to D.H. Lawrence who (allegedly) refused to believe that moonlight is reflected sunlight (that sounds too pat and too stupid to be true), but even if it were, you kind of know what Lawrence is talking about. We have evolved over tens of millions of years to find night-time eerie and the changing shape and movement of the moon uncanny. Is it possible that part of a poet’s role is to respect ancient beliefs, to excavate and re-express deep ancestral feelings, no matter how irrational?

Not in Dawkins’s view. No! They were all wrong wrong wrong about science and deserve to be sent to the back of the class. He speculates that:

Keats, like Yeats, might have been an even better poet if he had gone to science from some of his inspiration. (p.27)

If only the Great Poets were more like, well, like Richard Dawkins!

Dawkins’s bêtes noirs and pet peeves

He fills the book with his own Daily Mail prejudices and bêtes noirs.

Post-modernism is rubbish Once again we get his shallow critique of ‘post-modernism’ and ‘cultural relativism’ – ‘the meaningless wordplays of modish francophone savants‘ – which he dismisses in a sentence as existing merely ‘to impress the gullible’ (p.41).

Now maybe a lot of French post-war philosophy is pretentious twaddle, but, for example, Derrida’s attempt to rethink the entire tradition of writing as a way of encoding authority which constantly undermines itself because of the looseness and deeply unfinishable nature of writing, or Foucault’s histories of how power is wielded by supposedly ‘objective’ academic disciplines and public institutions, or Roland Barthes’ explorations of how texts have lives of their own, determined by structures or levels of activity which have hitherto been overlooked – these are all fascinating intellectual endeavours, certainly more worth spending time reading about than the Daily Mail philistinism of Dr D.

It’s a telling irony that soon after a passage attacking writers and journalists (Bernard Levin, Simon Jenkins et al) for their shallow, ignorant dismissal of science as being a worldview which they don’t like — Dawkins himself carries out just such a shallow, ignorant dismissal of post-modern philosophy, for being a worldview which he doesn’t like.

Could it be that there are multiple worldviews, countless worldviews, and that we get along best by enjoying their diversity? No! Wrong wrong wrong!

Children’s book awards are vulgar Dawkins gives an account of attending an awards ceremony for children’s science books where the audience was encouraged to make insect noises, which he found insufferably ‘vulgar’.

Computer games are vulgar In much the same way, in The Blind Watchmaker, he dismissed ‘vulgar’ arcade computer games (not as dignified and worthy as the computer game he had devised, of course).

The ‘Top 20’ shows how vulgar people are This kind of lofty condemnation of ‘popular’ interests and tastes comes, of course, from a long line of lofty and contemptuous Oxford intellectuals, and sits alongside his fastidious disapproval of the so-called ‘Top 40’ and how easy it is to promote ‘worthless pop singles, an attitude of fastidious elitism which made me laugh at the end of The Blind Watchmaker. Later on he finds the space, for obscure personal reasons, to go out of his way to tell us that the activity of bodybuilding is an ‘odd minority culture’. Possibly. But not as odd as writing a book supposedly about science and going out of your way to include a paragraph disapproving of body building.

The X-Files is anti-scientific Dawkins takes the time to explain why he dislikes the popularity of the TV show The X-Files – namely, because of the way it foregrounds the spooky, irrational explanations for the weird occurrences it depicts (p.28) – which is so frightfully anti-science.

Douglas Adams is masterly By contrast, he wants us to know that he approves of the ‘masterly’ science comedies of Douglas Adams (p.29).

Science fiction is serious literature! Science fiction by the likes of Arthur C. Clarke, Isaac Asimov et al:

seems to me to be an important literary form in its own right, snobbishly underrated by some scholars of literature (p.27)

Oh yes, if Dawkins ran literature departments, things would be different! Out with Derrida and Barthes, in with Douglas Adams and Isaac Asimov!

Dr Dolittle is not racist Dawkins finds time to share his opinion that Hugh Lofting’s Dr Dolittle books do have a little racism in them, but then that was the universal worldview of the 1920s, so it is silly for ‘pompously correct librarians’ to ban them. And, anyway, Dolittle’s love of animals is superior to the speciesism which even the most politically correct of our own time are still prey to (p.53).

Ruskin didn’t understand science I was actively upset when Dawkins quotes a passage of Ruskin about how people prefer myths and stories to the cold empirical facts – and then goes on to ridicule Ruskin’s attitude not by countering his views but by retelling the hoary old anecdote about the great critic and social reformer’s disastrous wedding night.

It stood out to me as a moment of gross insensitivity and schoolboy bullying. Ruskin was a genius, who struggled to transform the way the philistine British thought about art and design and handed his cause on to the young William Morris. To drag up this hackneyed anecdote is in the worst possible vein of Daily Mail ad hominem philistinism.

Summary

a) Dawkins is a modern reincarnation of just the kind of literal-minded, unbending, unsympathetic and impenetrably dense philistine who forced so many of the Great Poets – Shelley and Byron and Browning, Lawrence and Auden – to flee claustrophobic, puritanical, judgemental England for hotter, more laid-back climes.

b) There seems to be no subject too trivial or too minor for Dawkins not to be able to use it as the pretext to share with the reader his trite and obvious opinions and prejudices, or to prompt another anecdote from his endless store of ‘fascinating’ encounters.

Imagine if David Attenborough interrupted his voiceover about humming birds or polar bears to share an anecdote about a distinguished professor he had a squabble with over dinner at his Oxford college, or took a minute to explain to his viewers why Star Trek is better than Dr Who, or why Douglas Adams’ novels are criminally under-rated.

You’d think he’d gone mad. But that’s what most of this book is like.

Snobbism

Although Dawkins goes out of his way to sound reasonable he can’t help quite frequently sounding like a snob, fastidiously distancing himself from the ghastly taste of the mob. Richard – alongside the Daily Mail – laments how standards have slipped and once-mighty institutions have pandered to popular taste. O Tempora! O mores!

In his chapter rubbishing horoscopes and astrology, Dawkins quotes surveys in which most people say they read horoscopes just for entertainment:

Their taste in what constitutes entertaining fiction is evidently different from mine!

Indeed. Dawkins has told us several times that he cycles through the streets of leafy Oxford. I wonder if he’s ever thought about people like me who have to fight their way onto over-crowded tube trains, or flop exhausted at the end of the day onto a muggy bus, brain dead and pick up a copy of the Metro or Standard to leaf through, treating the horoscopes as much the same as all the other brainless twaddle in it which helps pass the time if you are very, very tired. Different strokes for different folks. Live and let live, maybe…

I chortled when he referred to the Radio Times as ‘that once-respected organ of the BBC’ (p.124). Could anyone sound more pompous?

After taking part in a BBC programme promoting a faith healer who claimed to be the reincarnation of a 2,000-year-old dead doctor, Dawkins clashed with the commissioning editor of this programme. He was horrified that the BBC should:

lend the weight of its long built-up reputation by appearing to accept the fantasy at face value (pp.125-6)

It’s so often the BBC which draws the ire of the Mrs Angry’s from Tunbridge Wells… and so it is for Dawkins. I smiled when he described David Frost as:

a veteran British television personality whom some government saw fit to knight… (p.126)

‘Whom’. I know it’s technically correct but I don’t like using ‘whom’ precisely because Dawkins is typical of the kind of people who still use it, the kind of people who perpetually think the BBC is going to the dogs.

The long chapter demolishing astrologers and fake magicians is an orgy of supercilious superiority to the immoral tricksters who make money be exploiting a gullible public, aided and abetted by intelligent people in places like the BBC who really should know better!

Dawkins’s personal stories and gossip

I’ll begin with a personal anecdote. (p.138)

The book is jam packed with chatty stories and anecdotes from people he’s met, and letters he’s received, and newspapers articles he’s read, and debates he’s taken part in, and lectures he’s given, and children he’s chatted to, and anecdotes about his wife, and his mother-in-law, and his parents, and uncle and aunt.

  • I am told on good authority that defence lawyers in the United States sometimes object to jury candidates on the grounds that they have had a scientific education (p.83)
  • A colleague tells me of a time when he was up for selection on a jury… (p.84)
  • I had a schoolfriend who claimed that he could recognise any member of the 80-strong residence in which we lived purely by listening to their footsteps. (p.88)
  • I had another friend from Switzerland who claimed that when she walked into a room she could tell, by smell, which members of her circle of acquaintances had just left the room. (p.88)
  • I once received a lawyer’s bill, the last item of which was ‘Time spent making out this bill’ (p.106)
  • My wife Lalla Ward recalls an occasion when an American starlet approached the director of the film they were both working on with a ‘Gee, Mr Preminger, what sign are you?’ and received the immortal rebuff, in a thick Austrian accent, ‘I am a Do Not Disturrrb sign.’ (p.118)
  • I once met a woman who was employed full time to invent these stories [Elvis sighted on Mars-type stories] for an American publication… (p.124)
  • I recall an entertaining dinner with a philosopher who told me the following story: One day in church he noticed that a priest, in a kneeling position, was hovering nine inches above the church floor. (p.133)
  • I remember once trying to amuse a six-year-old child at Christmas time by reckoning with her how long it would take Father Christmas to go down all the chimneys in the world. (p.141)
  • I used a similar illustration in one of my Royal Institution Christmas lectures in 1991. (p.145)
  • My wife once bought for her mother a beautiful antique watch with a pink face. (p.154)
  • During this particular minute, my thoughts have strayed to a schoolfellow called Haviland (I don’t remember his Christian name, not what he looked like) whom I haven’t seen or thought of for 45 years. (p.159)
  • Daniel Dennett has told me of a conversation with a philosopher colleague who had read Wonderful Life as arguing that the Cambrian phyla did not have a common ancestor – that they had sprung up as independent origins of life! (p.207)

He spends a page and a half describing the time his parents persuaded little Richard and his sister to put on blindfolds and led them out to the garden where they sat them in a wooden frame which they persuaded the children was an airplane, trundled it along the ‘runway’ and then lifted it into the air and zoomed it around the garden, sometimes brushing against low-hanging branches of trees.

This anecdote is the basis of a couple of pages of complete speculation about why credulity, the ability to believe anything they’re told, might be an evolutionary advantage in human children – but how adults should grow out of it and apply serious scientific standards of scepticism and an informed understanding of statistics to every aspect of their lives.

But why? Why can’t people believe what they want to? In reality they already do, and always have, and always will. Charming, page-long anecdotes about Richard’s upper-middle-class childhood aren’t going to change anyone’s minds, they just warm the hearts of the upper-middle-class book reviewers who, as a result, shower his books with praise (enthusiastic blurbs on the back of this book come from A.S. Byatt [private school and Oxford] and Matt Ridley [the fifth Viscount Ridley, Eton and Oxford]).

On and on it goes in an endless burbling stream of jolly gossip which is entertaining because it’s so inconsequential and vain, a self-satisfied family album of preening opinions.

Sometimes there are bits of science…

Why rainbows appear like they do, sound waves, how we can read the chemical composition of different stars, DNA fingerprinting – there are interesting fragments of actual science, reasonably clearly explained, buried amid all the gossip and personal prejudices.

There’s another explanation of the structure of the eye (repeated from River Out of Eden), a page about qasars, and 4 or 5 pages about ‘Skinner boxes, and the behaviouralist B.F. Skinner’s experiments rewarding animals (pigeons and rats) which led him to notice that animals, too, appear to develop superstitious rituals i.e. if they happened to be doing something (pecking a particular part of the box, or huddling on one particular corner) when some food pops through the chute into the box, then they will repeat the same behaviour again and again in the hope that lightning strikes twice. Like humans who carry out lucky tics and rituals.

There’s a lengthy passage (pp.193-209) attacking Stephen Jay Gould. It’s typical of Dawkins in that he says he respects the great American populariser of evolution, but then goes on to systematically demolish every aspect of Gould’s book Wonderful Life. Gould uses the fossil discoveries in the Burgess Shale to assert that the Cambrian period when they were laid down saw a spectacular and unprecedented explosion of evolutionary growth and diversity, hundreds of wacky designs for life forms, many of which flourished and disappeared. Dawkins powerfully disagrees that evolution works in such bursts and spurts, and lines up a barrage of critics and authorities to demolish Gould’s position, concluding with a quote from Peter Medawar claiming it was a shame that Gould had (before his death in 2002) become the pre-eminent popular exponent of evolutionary theory in the United States because his ideas are ‘confused’ and totally unrepresentative of the mainstream of evolutionary thought (‘in fact the evolutionary biologists with whom I have discussed his work tend to see him as a man whose ideas are so confused as to be hardly worth bothering with…’, p.207).

OK so there’s some science in this passage, as Dawkins explains why he disagrees with Gould but, as you can tell, the explication of the facts of what was found in the Burgess Shale take a poor second place to Dawkins’s argufying about it. The point of these fifteen pages or so is not to explain the thing to you, it’s to convince you that Gould was wrong wrong wrong!

The passage I liked best explained how evolution, among other things, has selected for the correct shapes of key proteins – some crucial proteins have multiple shapes and versions: the correct shapes are the ones which allow them to carry out their life-enabling activities, but it explains why things go disastrously wrong if the body, for whatever reason, starts to produce wrong-shaped alternatives: which is what happens in mad cow disease, when an alternative shape of the prion protein occurs and then triggers a cascade of mishapen prions throughout the body, which leads to holes forming in the brain, and madness.

Moments like this are obviously interesting, but they are oases of sense in a book most of whose text is made up of anecdotes, stories, far-fetched analogies, pitifully simplistic opinions about Great Literature, and a wholesale misunderstanding of human nature.

Conclusion

As to Dawkins’s central point that all kinds of people think unscientifically, don’t understand statistics or probabilities or how DNA fingerprinting works or how the rainbow is made, and instead believe gibberish about horoscopes and astrology and magic tricks… well, so what?

People have always been fools, always will be, as John Gray points out (see my review of his most recent book, The Soul of the Marionette). On the whole, people don’t burn witches or lynch strangers or march gaily off to war like they used to, so that’s progress of a sort.

But expecting everyone to suddenly abandon junk TV, sensationalist tabloid journalism, horoscopes and the countless promises of overnight diets and anti-ageing creams, and suddenly, miraculously, become hyper-intelligent, private-school educated, Oxford academic experts in DNA and astronomy is… well… a fatuous fantasy.

Dawkins and Junior

When my son (22 and studying Biology at university) discovered that I was reading Dawkins’s books, he was genuinely outraged. He crossly told me that all Dawkins’s contributions to biology have been discredited, and that his only achievement has been to create in many people’s minds a vision of science and scientists as narrow-minded, intolerant, anti-religious and bigoted – a view which my son has personally found himself having to extricate himself from in student conversations, and which has been extremely socially unhelpful.

P.S.

One last Dawkins anecdote to finish with:

In a previous book I gave away the number of the combination lock on my bicycle. I felt safe in doing so because obviously my books would never be read by the kind of person who would steal a bicycle. Unfortunately somebody did steal it, and now I have a new lock with a new number. (p.147)

This vignette perfectly captures Dawkins’s spirit of winning naivety and complete ignorance of human nature. Maybe you can see why, in my review of The Blind Watchmaker, I dubbed Dawkins the Mr Bean of Biology.

Credit

Unweaving the Rainbow by Richard Dawkins was published by Penguin in 1998. All references are to the 1999 Penguin paperback edition.

Related links

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by Simon on January 17, 2020  •  Permalink
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Posted by Simon on January 17, 2020

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River Out of Eden by Richard Dawkins (1995)

Nature is not cruel, only pitilessly indifferent. That is one of the hardest lessons for humans to learn.
(River out of Eden, page 112)

Three things become clear early in this book:

1. Dawkins is very argumentative He can barely state a fact or idea without immediately imagining a scientific illiterate misunderstanding it, or a creationist arguing against it, or the tradition of thinkers who’ve adopted a contrary position, and then – whooosh! – he’s off on one of his long-winded digressions devising metaphors and analogies and thought experiments (‘imagine 20 million typists sitting in a row…’) devoted to demolishing these opponents and their silly beliefs.

The neutral reader sits back, puzzled as to why Dawkins feels such a continual necessity to find enemies and argue against them, constantly and endlessly, instead of just stating the facts about the natural world in a lucid, calm way and letting them speak for themselves.

2. Dawkins is not a mathematician as he points out quite a few times in The Blind Watchmaker. As I read him saying this for the third or fourth time, it dawned on me that this means Dawkins rarely if ever makes his points with numbers – through data or statistics, tables and graphs and diagrams, as a true scientist might. Instead, deprived of numbers (of course he does use numbers, but very sparingly), Dawkins makes his case through persuasion and rhetoric. He is a rhetorician – the dictionary definition being someone who:

exploits figures of speech and other compositional techniques to have a persuasive or impressive effect

Consider the titles of the clutch of mid-career books which I’m rereading: The Blind Watchmaker, River Out of Eden, Climbing Mount Improbable, Unweaving The Rainbow. They are all named for metaphors or analogies for the big Darwinian idea he is so anxious to explicate and defend, and they are themselves made up of chapters which are made up of sections and passages which rely far more on metaphor and analogy and stories and anecdotes than they do on hard data and scientific facts.

3. Dawkins is good at it The four book titles quoted above are all vivid and powerful metaphors for evolution and its implications. The master metaphor which dominates River Out of Eden – that all life on earth amounts to a river of DNA flowing from simple beginnings and then splitting over a billion years or more into thousands and then millions of tributaries, one for each of the species now alive – is a powerful explanatory tool, and leads you on into a series of other analogies and metaphors.

Wrong!

I was amused by the number of times Dawkins mentions or quotes other people – creationists, fellow academics or other biologists – solely to show how their approach or interpretation of Darwinism, biology or anything else is wrong wrong wrong!

He doesn’t hold back. He isn’t subtle or circumspect. He often puts exclamation marks at the end to emphasise just how wrong wrong wrong they are! before proceeding to demolish them one by one! It’s like watching a confident man at a coconut shy throwing the wooden balls and knocking each coconut off, one… by… one. Here’s a selection of his targets:

– Lamarckism or the belief that characteristics organisms acquire during their lives are passed on to their children – ‘Wrong, utterly wrong! (p.3)

– It’s tempting to think of the original branches between what would later turn out to be distinct families or orders of animals as consisting at the time of the first breach ‘mighty Mississippis rivers’ – ‘But this image is deeply wrong‘ (p.10)

– Zoologists are tempted to think of the divide between what later became major groups as a momentous event. But they are ‘misled’ (p.11)

– One zoologist has suggested that the entire process of evolution during the Cambrian period, when so many new species came into existence, must have been a different process from what it is now. ‘The fallacy is glaring!‘ (p.12)

– The digital revolution at the core of the new biology has dealt ‘a killer blow to vitalism, the incorrect belief that living matter is deeply distinct from nonliving material’ (p.20).

– ‘There is a fashionable salon philosophy called cultural relativism which holds… that science has no more claim to truth than tribal myth’. It is, of course, wrong, which he goes on to prove with the fact that tribal myth can’t build the airplanes which fly you to conferences where you can present papers about cultural relativism.

– He once asked a student how far back you’d have to go to find ancestors that Dawkins and the student shared. She replied back to the apes. ‘An excusable intuitive leap, but it is approximately 10,000 percent wrong.’

– Some creationists insist on misinterpreting the scientific concept of Mitochondrial Eve and claim, from the sound of it, that she’s identical with the Biblical Eve! ‘This is a complete misunderstanding.’ (p.62)

And so on…

The trouble with Dawkins’s arguments

There are several practical problems with Dawkins’s relentless argufying.

One is that, because Dawkin is arguing all the time with someone or other, if you put down the book then pick it up later, it’s often difficult to remember the precise Wrong Interpretation of evolution he was in the middle of raging against i.e. to recall the context of whatever scientific information he happens to be presenting.

Making it worse is the way Dawkins often breaks down the argument he’s tackling into sub-arguments, and especially the way he breaks his own counter-arguments down into sub-counter-arguments. And then he’ll say, ‘I’ve just got to explain a few basic concepts…’ or ‘Before I reply to the main thrust of that argument, let me make a small digression…’ leading you steadily away from whatever point you think he was trying to make.

And if the digression takes the form of an analogy, yjrm quite quickly you can be three of four ‘levels’ removed from the initial proposition he’s arguing against. You find yourself needing to follow an analogy he’s using to explain a concept you need to understand in order to grasp the thrust of a part of an argument he’s making against a specific aspect of one particular misinterpretation of evolution.

In other words – it’s easy to get lost.

At several points he asks the reader to be patent, but I wonder how many of his readers really do have the patience to put up with the digressions and analogies.

It’s an oddity of Dawkins’s approach that moments after venting a vivid attack on creationists and Christians for their ignorance, for being ‘wrong, utterly wrong!’ – he will ask them to bear with him, and have a little patience because what follows is only a rough analogy or a hypothetical example or a computer program he’s made up, or some other rather remote and tangential point.

It’s as if someone punched you in the face and then asked you to hold their coat for them. it shows an astonishing naivety and innocence.

And more to the point, the upshot of all these aspects of his approach is that – he never really presents the knock-down, drop-dead, unanswerable counter-arguments against creationist literature which he continually promises.

In fact on several occasions in The Blind Watchmaker he made so many apologies about the absence of current scientific knowledge on a particular point (especially about a) the patchiness of the fossil record and b) the sharply conflicting hypotheses among scientists about how life on earth got started) – or he went on at such length about the arguments and divisions among the scientists themselves – that I emerged with my belief in evolution shaken, not confirmed.

I couldn’t help feeling that, if I was a born-again Christian, a fundamentalist and creationist, Dawkins’s books, with their combination of in-your-face insults with mealy-mouthed, round-the-houses argufying, might well confirm me in my anti-evolutionary beliefs.

The importance of geological time

To summarise Dawkins’s arguments for him, the central foundation of Darwin’s theory of evolution by natural selection is TIME. Lots and lots and lots of time. Geological time. More time than we can possibly imagine. To quote Wikipedia (in order to have the latest, up-to-date info):

The earliest time that life forms first appeared on Earth is at least 3.77 billion years ago, possibly as early as 4.28 billion years, or even 4.5 billion years; not long after the oceans formed 4.41 billion years ago, and after the formation of the Earth 4.54 billion years ago.

Around 4 billion years ago. No human being can understand that length of time.

The next element in Darwin’s theory is the advantage of small changes, minute changes, sometimes molecular changes, in organisms as they reproduce and create new generations. Even minuscule differences, which humans cannot detect, might be the vital determinants in whether an organism just about survives to reproduce, or just fails and is killed or eaten before it reproduces.

Dawkins’s core argument is that, if you set that process in train and let it run for four and a half billion years – then anything can happen, and we have the evidence in the fossil record that it has, that forms of life of surpassing weirdness and sizes and functions have been and gone, and their descendants live on all around us in a marvellous profusion.

It is:

  1. the enormous, impossible-to-conceive length of geological time
  2. and the big difference to its chances of survival which even tiny variants in an organism’s attributes can give it

which anti-evolutionists tend not to have grasped, or understood or have simply rejected. Which drives Dawkins crazy.

The evolution of ‘the eye’

The locus classicus (the classic example) where the two sides clash is THE EYE.

Anti-evolutionary writers of all stripes cite the human eye and assert that it is ridiculously unlikely that The Eye can have just popped into existence in complete perfection, with a fully functioning iris and lens and all the rods and cones which detect light and shade and colour, absurdly unlikely, only a caring Creator God could have made something so wonderful.

AND the related creationist argument, that what possible use would half an eye, or a tenth of an eye or a hundredth of an eye have been to any organism? It must have appeared fully functional or not all.

To which Dawkins and all the evolutionists reply that a) no-one is saying it came into being fully functional and b) you’d be surprised: half an eye is really useful. So is a hundredth of an eye, or a thousandth.

In fact, having a patch of skin which is merely light-sensitive can convey advantage on some organisms. Given enough generations this light-sensitive patch will become a confirmed part of all the members of a particular species, and will tend to form a dip or hollow in the skin to protect itself from damage. If the dip goes deep enough then sooner or later some chance mutation may code for another strand of skin to form across the opening of the dip, with a slight preference given to any variation which creates a membrane which is translucent i.e. lets at least some light through to the light-sensitive skin beneath.

And bingo! The eye!

The killer fact (for me, reading this well-trodden argument for the umpteenth time) is that not only is The Eye not an improbable device for evolution to create in the natural flow of endless variations created in each new generation and likely to be selected because its adds even a smidgeon of survival value to its owners..

But that the formation of The Eye turns out to be a highly probable result of evolution. We know this because we now know that The Eye has evolved at least forty separate times in widely separated orders and families and genera. over the past four and a half billion years. Conclusion:

Never say, and never take seriously anybody who says: ‘I cannot believe that so-and-so could have evolved by natural selection.’ (p.81)

Dawkins dubs this position The Argument from Personal Incredulity, and this discussion of The Eye is one of the few places where Dawkins states an opponent’s argument clearly and then mounts a clearn and convincing counter-argument.

Analogies

Bored with a lot of the these tired old arguments, and of Dawkins’s combative yet strangely naive style, I took to noting the the analogies, reading them as a kind of buried or counter-narrative linking up the boring arguments.

– The river out of Eden is the river of DNA, a river of digital information, which makes up all living things. In fact the river has branched out over the aeons, with countless streams and tributaries running dry but there are, as of now, some thirty million separate rivers of DNA or species.

– Each generation is a sieve or filter: good genes get through, ‘bad’ genes don’t.

– The genetic code is like a dictionary of a language with 64 words.

– the DNA inside each of us is like a family Bible (p.44)

– Insofar as it is digital, the genetic code is like digital phones or computer codes.

– Every cell in your body contains the equivalent of 36 immense data tapes (i.e the chromosomes) (p.21).

– We humans – and all living things – are survival machines designed to propagate the digital database that did the programming.

– The membranes in a living cell are like the glassware in a laboratory.

– An enzyme is like a large machine tool, carefully jigged to turn out a production line of molecules of a particular shape (p.26)

– Cells’ ability to replicate is comparable to the process of ‘bootstrapping’ required in the early days of computing (p.27).

Reading River Out of Eden for the analogies was more fun that trying to follow many of Dawkins’s trains of thought which were often tortuous, long-winded and strangely forgettable.

Credit

River Out of Eden by Richard Dawkins was published by Weidenfeld and Nicholson in 1995. All references are to the 1996 Phoenix paperback edition.

Related links

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by Simon on January 16, 2020  •  Permalink
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Posted by Simon on January 16, 2020

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The Blind Watchmaker: Why the Evidence of Evolution Reveals a Universe without Design by Richard Dawkins (1986)

I hope that the reader is as awestruck as I am (p.37)

I first read this book 25 years ago and in the intervening years I had forgotten how naive, silly and embarrassingly earnest Dawkins can be.

The blind watchmaker

The basic premise is easily summarised. In a theological work published in 1802 – Natural Theology, or Evidences of the Existence and Attributes of the Deity – the English theologian William Paley said that if you were out for a walk and stumbled over a stone, you wouldn’t think anything of it, it is so obviously part of the natural world and you unthinkingly accept it as a product of impersonal geological forces.

But if you were out for a walk and stumbled over a watch, particularly if it was an 18th-century, ornately fashioned pocketwatch, you would immediately deduce that something so wonderfully crafted, with so many carefully calibrated inner workings clearly designed for a purpose, presupposed a designer – a craftsman who consciously and deliberately designed and built it.

Well, says Paley, same for the natural world about us. When we look at the countless examples of marvellous design in the world about us – our own eyes, the interaction of insects pollinating flowers, the perfect design of fish for swimming and birds for flying – who can look at all these marvels and not be prompted to declare that there must, on the analogy of the watch, be a conscious designer, an all-powerful entity which created the entire world and all the creatures in it so that they would all perform their functions perfectly? In other words, God (and, since Paley was an Anglican clergyman) the Christian God.

In fact Paley’s book was just the latest in a very long line of works promoting, describing and explaining what is called Natural Theology, the view that the existence of an all-powerful loving God can be deduced solely from observation of the world around us, without the need of any holy books or revelations. This line of argument is recorded as far back as the Biblical psalms and is believed by many people right up to the present day.

Dawkins’s book is a refutation of this entire way of thinking as it relates to the natural world i.e. to living organisms.

As Dawkins points out, it was reasonable to hold Paley’s beliefs in his day and age, it was a reasonable hypothesis in the absence of any better explanation for the origin and diversity of life we see around us.

But since Charles Darwin published On The Origin of Species in 1859, all forms of natural theology have been rendered redundant. We now have an infinite simpler, more satisfying and more believable explanation for the origin, spread and diversity of life forms on earth, which is Darwin’s Theory of Evolution by Natural Selection.

Thus Dawkins’s 340-page book amounts to a sustained argument against natural theology, and against the whole crew of Christians, Creationists, theists, bishops and poets and philosophers who still espouse it, because they are wrong and Richard and the other evolutionary biologists he cites are right.

The book combines a battery of supposedly ‘philosophical’ arguments with an overview of natural history, biology and – in particular – what was then, in 1986, the latest thinking about genetics and DNA – in order to ridicule, rubbish and refute every possible variation of natural theology and to promote Darwin Darwin Darwin.

One long argument

To describe The Blind Watchmaker as argumentative is an understatement. The book is expressly not a straightforward exposition of Darwin’s theory, it is more a series of arguments which Dawkins has with proponents of the views he wishes to demolish, as well as with other biologists whose theories he disputes, and sometimes even with himself. If it moves, he’ll argue with it. It is like an explosion in an argument factory.

And Dawkins is addicted to making elaborate and often far-fetched analogies and comparisons to help us understand evolution. In other words, you have to wade through a lot of often irrelevant argumentation and distracting analogies in order to get to the useful information.

Another key part of Dawkins’ approach, something I found initially irritating about the book, then found ludicrous, and ended up finding laugh-out-loud funny, is the way he makes up people to argue with.

He will invent a naive believer of this or that aspect of natural theology, someone who can’t credit evolution with explaining everything about the natural world, put words into their mouths, and then gleefully demolish their made-up arguments.

I think it’s the purest example of an author using convenient straw men to set up and knock down that I’ve ever read. Thus in the first 40 pages he invents the following figures:

  • a distinguished modern philosopher who he once sat next to at dinner and revealed to a horrified Dawkins that he didn’t understand why the evolution and diversity of life required any special explanation (p.5)
  • a ‘hypothetical philosopher’ he invents and claims would, at this stage of Dawkins’s exposition, be ‘mumbling something about circular argument’ (p.8)
  • a hypothetical engineer who starts ‘boring on’ about the whole being greater than the sum of the parts (p.11)
  • he creates another engineer (‘our engineer’) to act as a foil for his explanation of how bat echolocation works in chapter 2
  • with similar condescension he refers at various moments to ‘our mathematicians’ in order to dismiss their arguments
  • the second half of the book is littered with references to ‘creationists’ and ‘creationist propaganda’ and ‘anti-evolution propaganda’ which he doesn’t actually quote, but whose views he briefly summarises before pulverising them

On page 13 he dismisses ‘readers of trendy intellectual magazines’ saying that, if you read them you might have noticed that:

reductionism, like sin, is one of those things that is only mentioned by people who are against it.

This thought then rapidly gets out of control as he goes on to say that calling yourself a reductionist is the equivalent, ‘in some circles’ of admitting that you eat babies.

He then goes on to compare the hypothetical simple-minded ‘reductionist’ who he’s just invented with his own, more sophisticated, materialist reductionism, and then writes:

It goes without saying – though the mythical, baby-eating reductionist is reputed to deny this – that the kinds of explanations which are suitable at high levels in the hierarchy are quite different from the kinds of explanations which are suitable at lower levels.

You can see that he’s making a serious point, but can’t help wondering why it required inventing a straw man and then attributing him the bizarre characteristic of eating babies!

This is just one tiny snapshot of Dawkins’s technique, in which serious and often interesting points are surrounded by relentless argufying and quarrelling, more often than not with entirely fictional, made-up figures who are often given ridiculously caricatured views and qualities.

In among the vast army of people Dawkins picks fights with are some real Christian or anti-evolutionary figures who he briefly invokes before subjecting them to withering criticism.

  • the ‘distinguished sceptic’ who refused to believe Donald Griffin when the latter first explained the secret of bat echolocation at a 1940 conference (p.35)
  • Bishop of Birmingham, Hugh Montefiore (1920-2005) whose book The Probability of God Dawkins credits with being an honest attempt to prove God but which he quickly dismisses for its widespread use of what Dawkins calls The Argument From Personal Incredulity i.e. ‘I find it hard to understand…it is difficult to see how…’ etc which only goes to show the ignorant the author is (p.37)
  • Francis Hitching (b.1933) author of The Neck of the Giraffe or Where Darwin Went Wrong (1983) which appears to be a sustained attack on Darwinism
  • The Duke of Argyll who, apparently, supported Darwin but with the modest proviso that the loving Creator God did, of course, intervene in evolution to create new species and generally give evolution a helping hand (p.248)
  • the editor of Creationist magazine Biblical (p.251) who is quoted leaping onto the controversy surrounding the (then) new theory of punctuated equilibrium in order to claim it undermined the entire Darwinian edifice

The remorseless battering of opponents, real or hypothetical, builds up to a climax in the final chapter where Dawkins tackles head-on half a dozen or so alternative explanations for the existence of complex life forms including the Big One, Christian Creationism.

Naivety

There’s a stunning moment before the book’s even properly begun which reveals Dawkins’ amazingly earnest naivety about the real world.

He describes taking part in a formal debate (organised, apparently, at the Oxford Union). Afterwards he is seated at dinner (the book includes lots of anecdotes about conversations over dinner; Oxford is that kind of place) next to the young lady who argued against him in the debate, and made the creationist case – and Dawkins is horrified to discover that she doesn’t necessarily believe all the points she made!!

Indeed, Dawkins reveals to his shocked readers, this young lady was sometimes making arguments simply for the sake of having a debate! Richard is horrified!! He himself has never uttered a word he didn’t believe to be the complete truth! He cannot credit the notion that someone argued a case solely for the intellectual challenge of it!

At first I thought he was joking, but this anecdote, told on page two of the Preface, establishes the fact that Dawkins doesn’t understand the nature of intellectual debate, and so by implication doesn’t understand the worlds of law or politics or philosophy or the humanities, where you are routinely asked to justify a cause you don’t particularly believe in, or to argue one of any number of conflicting views.

When I told my son this he recalled being made to take part in school debates when he was 11. Learning to debate different points of view is a basic teaching, learning and cultural practice.

Philosophical simple-mindedness

Dawkins likes to brandish the word ‘philosophy’ a lot but none of his arguments are truly philosophical, they are more rhetorical or technical. For example, early on he asks ‘What is an explanation?’ before giving this definition of how he intends to use the word:

If we wish to understand how a machine or living body works, we look to its component parts and ask how they interact with each other. If there is a complex thing that we do not yet understand, we can come to understand it in terms of simpler parts that we do already understand. (p.11)

This isn’t really philosophical, more a straightforward clarifying of terms. And yet in chapter 2 he refers back to the opening chapter in which this and much like it occurred, as ‘philosophical’. Quite quickly you get the sense that Dawkins’ idea of ‘philosophy’ is fairly simplistic. That it is, in fact, a biologist’s notion of philosophy i.e. lacking much subtlety or depth.

Same goes for his attitude to the English language. Dawkins is extremely proud of the care with which he writes, and isn’t shy about showing off his rather pedantic thoughts about English usage. For example, he stops the thrust of his argument to discuss whether it is better to write ‘computer programme’ or ‘computer program’. Towards the end of the book he mentions ‘the great Japanese geneticist Motoo Kimura’

whose English prose style, incidentally, would shame many a native speaker (p.303)

There is no reason for this unnecessary aside except to let everyone know that he, Richard Dawkins, is a first class judge of what constitutes good English, and isn’t shy about letting you know it. As with the ‘philosophy’, Dawkins’s comments about the English language are fairly obvious, but presented with a great hoo-hah and self-satisfaction.

Dawkins’s sense of humour!

Way before he has given any kind of account of Darwin’s actual theory, Dawkins is assailing us with his sense of humour, sometimes with short squibs, sometimes with extended ‘humorous’ passages.

You can tell when he’s made a joke, or said something he’s really proud of, because he rounds off the punchline with an exclamation mark!

It’s quite a while since I’ve seen quite so many exclamation marks in a text and it made me realise that their cumulative impact is to make you feel the author is poking you in the ribs so you will laugh and/or marvel at the wonderful anecdote they’ve just told!

Here’s an example of the way that genuinely fascinating natural history/science is buried in Dawkins’s rib-nudging approach. Chapter two is about echolocation in bats, and moves from:

  1. a detailed description of how bat echolocation works – which is riveting
  2. to pondering what it is like to be a bat and live in a bat’s body and live and perceive the world entirely by echolocation and sonar – which is sort of interesting, but speculative
  3. to an extended passage where Dawkins imagines a conference of scientific bats – he does this in order to imagine his scientific bats listening to one of their colleagues presenting a paper with the flabbergasting discovery that humans use a previously unknown sense called ‘sight’, employing two bulbous receptors in their faces called ‘eyes’ in order to analyse light signals which appear to create in their brains 3-D models of the world which help them navigate around – almost as well as bats!!

Now this final passage is sort of helpful, maybe, if you’re in the mood, and sort of humorous. But it is at the same time more than a little ludicrous in what purports to be a serious scientific book. Above all, it gives you a powerful whiff of Dawkins’s world, a world of self-important Oxbridge academics. It does this in two ways:

  1. the choice of an academic conference as the setting for his imaginary fantasy tells much you about the milieu he inhabits
  2. the fact that he thinks he can spend an entire page of his book sharing this extended joke with his readers tells you a lot more about his supreme, undentable self-confidence

Unintentional autobiography

Dawkins likes to think he is making ‘difficult’ science more accessible by giving the poor benighted reader plenty of analogies and examples from everyday life to help us understand these damn tricky concepts. But it is one of the most (unintentionally) enjoyable aspects of the book that many of the examples he uses betray a comic out-of-touchness with the modern world.

I laughed out loud when on page 3 he writes:

The systematic putting together of parts to a purposeful design is something we know and understand, for we have experienced it at first hand, even if only with our childhood Meccano or erector set.

He explains the Doppler Effect by asking the reader to imagine riding a motorbike past a factory whose siren is wailing. Motorbike? Wailing factory siren? This sounds like a W.H. Auden poem from the 1930s. He goes on to explain that it is the same principle as the police use in their radar traps for speeding motorists.

Elsewhere he begins to explain the unlikeliness of organic molecules coming into existence by asking us to ponder the number of his bicycle lock (and later assures us that ‘I ride a bicycle to work every day’, p.84). On almost every page there is an unreflecting assumption that we will be interested in every detail of Professor Dawkins’s life, from his bicycle lock to his personal computer.

He suggests that the advantage even a slight improvement in the ability to ‘see’ would give an evolving species can be considered while ‘turning the colour balance knob of a colour television set’ (p.84).

He explains that the poor Nautilus shellfish has developed the hollow orb of a primitive ‘eye’ but lacks the lens facility that we and all mammals have, making it rather ‘like a hi-fi system with an excellent amplifier fed by a gramophone with a blunt needle’ (p.85).

Gramophone? Later he refers to ‘hi-fidelity sound amplification equipment’ (p.217). It’s possible that Dawkins is the most fuddy-duddy author I’ve ever read.

When describing the transmission of DNA he suggests it might help if we imagine 20 million ‘typists’ sitting in a row. When I asked my daughter what a ‘typist’ is she didn’t know. Reading the book now is like visiting a lost world.

The common brown bat Myotis emits sonic clicks at the rate of ten a second, about the same rate, Dawkins tells us, as a Bren machine gun fires bullets. An analogy which seems redolent of National Service in the 1950s.

His comic-book enthusiasm bubbles over when he tells us that:

These bats are like miniature spy planes, bristling with sophisticated instrumentation. (p.24)

Spy planes. Gramophone players. Factory sirens.

If you put to one side the science he’s trying to explain to us, and just focus on the analogies and stories he uses so liberally, a kind of alternative world appears – a portrait of an incredibly earnest, other-worldly, high-minded Oxford don, a man whose secure upper-middle-class childhood gave him an enduring love of toys and gadgets, and who has the sublime self-confidence of thinking he can change the world by the sheer power of his boyish enthusiasm and the secrets of his bicycle lock.

At the end of chapter 8 (which has been about positive feedback loops in evolution) he digresses into a lengthy description of the new-fangled ‘pop music’, which is introduced by what he describes as the ‘mid-Atlantic mouthings of disco jockeys’ on the radio, and reflected in something which he fastidiously refers to as the ‘Top 20’.

The whole sub-culture is obsessed with a rank ordering of records, called the Top 20 or Top 40, which is based only upon record sales. (p.219)

His point is that records are often bought by young people based on their popularity alone, not on their intrinsic artistic merit and that this is a form of arbitrary positive feedback loop, such as may also be true of some characteristics exaggerated in the course of sexual selection, such as the peacock’s tail.

But the real impact of reading this page-long digression is to make you realise that Dawkins is a real-life version of the stereotypical out-of-touch judge who has spent so long in the bubble of the legal profession (as Dawkins has spent virtually his whole life in the bubble of an Oxford college) that one of the barristers has to patiently explain to him that ‘The Beatles’ are a popular rhythm-and-blues group.

Elsewhere he refers to this new thing called ‘the mass media’. He refers to bodybuilders as members of a ‘peculiar minority culture’ (p.289). It doesn’t seem to occur to him that being a don at an Oxford college is even more of a ‘peculiar minority culture’.

Hi-fidelity gramophones. Factory sirens. Mid-Atlantic mouthings.

Then there are the directly autobiographical snippets – the references to his idyllic childhood in Africa (where he played with his Erector Set or admired a huge swarm of soldier ants), to his High Anglican public school, and on to the rarefied atmosphere of Oxford, where he spent his academic career from 1970 to 2008, and has had so many stimulating conversations over High Table which he is not shy about repeating for our benefit.

Thus, in the middle of an explanation of different theories about the speed with which evolution works, he stops because he:

cannot help being reminded here of the humiliation of my first school report, written by the Matron about my performance as a seven-year-old in folding clothes, taking cold baths, and other daily routines of boarding-school life: “Dawkins has only three speeds: slow, very slow, and stop.” (p.245)

Similarly, he begins Chapter 8 with a reminiscence of a schoolmaster of his who became uncontrollably apoplectic with rage, as an example of ‘positive feedback’.

This is followed by the story of a recent experience he had of attending Oxford’s Congregation, at which the hubbub of the large crowd slowly died away into silence – which he gives as an example of negative feedback.

My point is that The Blind Watchmaker is characterised by many pages of self-indulgent autobiography. It is an obtrusive element in the book which often gets in the way of the factual content he wants to convey. Dawkins is so in love with the sound of his own analogies and whimsical digressions, and so keen to share with you his ripping boyhood memories and High Table anecdotes, that it becomes at times, almost physically painful to read him.

Distracting analogies

But the real problem with all these analogies and reminiscences is that too often they get in the way of actually understanding his scientific points.

For example, chapter seven has an extended explanation of what arms races are in the context of evolution i.e. when predators and prey develop characteristics designed to help them outdo each other. So far so good. But then he goes off into an extended comparison with the race to build dreadnoughts before the Great War, and then to a description of the actual arms race between the USA and USSR building larger and larger nuclear weapons during the 1970s and 1980s.

My point is that the analogy takes on a life of its own, goes on at unconscionable length, and becomes steadily less useful and increasingly distracting and misleading.

Same goes when he asks us to imagine 20 million typists sitting in a row copying out a message as if that makes it at all easier to understand DNA, instead of puzzling and distracting.

Or when he spends a couple of pages calculating just how many monkeys it would take to type out the complete works of Shakespeare, as a demonstration of the power of cumulative selection i.e. if evolution really did work at random it would take forever, but if each version typed out by the monkeys kept all the elements which were even slightly like Shakespeare, and then built on that foundation, it is surprising how few generations of monkeys you’d need to begin to produce an inkling of a comprehensible version of the complete works of Shakespeare.

He thinks he is a scientific populariser but the examples he uses to explain scientific ideas are often out of date or far-fetched as to be harder to understand than the original scientific idea.

In the worst example in the book, chapter 8 about punctuated equilibrium doesn’t start with an explanation of what punctuated equilibrium actually is – instead, it starts with a two-page-long extended description of the ancient Israelites spending forty years wandering in the wilderness after fleeing Egypt.

Dawkins then invents (as so often) a hypothetical figure to mock, in this case a hypothetical historian who, he says, takes the story of the Biblical exodus literally and so calculates that, since the distance from Egypt to the Holy Land was only 200 miles and the Bible says it took them 40 years to cover, this must mean that the Israelites covered just 24 yards per day or 1 yard per hour.

‘Is the attitude of the Bible historian I have just invented ridiculous?’ asks Dawkins. ‘Yes, well, that’s how ridiculous the theory of punctuated equilibrium is.’

This example is at the start of the chapter, setting the tone for the entire discussion of punctuated equilibrium. And it lasts for two solid pages.

It is a classic example of how Dawkins is so in love with his own wit and that he a) never really gets round to clearly explaining what punctuated equilibrium is, and b) really confuses the reader with this extended and utterly irrelevant analogy.

(The theory of punctuated equilibrium takes the extremely patchy fossil record of life on earth as evidence that evolution does not progress at a smooth, steady rate but consists of long periods of virtual stasis or equilibrium, punctuated by sudden bursts of relatively fast evolution and the creation of new species. Some Creationists and Christians seized on the publication of this theory in the 1970s as evidence that Darwin was wrong and that therefore God does exist. Dawkins devotes a chapter and a host of ideas, sub-ideas and extended analogies to proving that the theory of punctuated equilibrium does not undermine the Darwinian orthodoxy – as Creationists gleefully claim – but can be slotted easily into the existing Darwinian view that evolution takes place at a slow steady pace: the core of Dawkins’s argument is that the fossil record appears to suggest long static periods interspersed with periods of manic change, solely because it is so very patchy; if we had a fuller fossil record it wold vindicate his and Darwin’s view of slow steady change. In other words, the theory of punctuated equilibrium is an optical illusion produced by the patchiness of the fossil record and not a true account of his evolution works.)

The whole tenor and shape and flavour of the book is dominated by Dawkins’s analogies and similes and metaphors and witty ideas but I can’t help thinking it would have been so much better to have devoted the space to killer examples from the natural world. Too often Dawkins’s long comparisons take the reader away from the wonders of life on earth and push you into the broom cupboard of his oddly sterile and unimaginative analogies.

To give another example, it is fascinating to learn that many bat species have scrunched-up gargoyle faces (which have terrified generations of humans) because their faces have evolved to reflect and focus their high-pitched echolocation signals into their ears. But when Dawkins tries to make this fact more ‘accessible’ by writing that bats are ‘like high-tech spy planes’, his analogy feels not only trite but – here’s my point – less informative than the original fact.

I have just read E.O. Wilson’s stunningly beautiful and inspiring book about the natural world, The Diversity of Life, which is all the more amazing and breath-taking because he doesn’t impose anecdotes about his own childhood or love of gadgets between you and the wonder’s he’s describing: the wonders are quite amazing enough without any kind of editorialising.

The Blind Watchmaker computer program

This un-self-aware, naive enthusiasm comes over most strongly in chapter three of the book which is devoted to the subject which gives the book its title, the computer program Dawkins has devised and titled The Blind Watchmaker (and which is advertised for sale at the back of the book, yours for just £28.85 including VAT, post and packaging).

At this early stage of the book (chapter 3) I was still hoping that Dawkins would give the reader a knock-down, killer explanation of Darwin’s theory. Instead he chooses to tell us all about a computer program he’s written. The program begins with a set of nine stick figures or ‘genes’, as he calls them, and then applies to them a set of instructions such as ‘double in length’ or ‘branch into two lines’ and so on. Here are the basic ‘genes’.

Basic ‘tree’ shapes developed by Richard Dawkins’ Blind Watchmaker programme

The idea is that, if you invent rules for transforming the shape of the basic ‘genes’ according to a set of fixed but arbitrary rules and then run the program, you will be surprised how the mechanical application of mindless rules quite quickly produces all kinds of weird and wonderful shapes, thus:

More advanced iterations produced by Dawkins’s Blind Watchmaker program

The point of all this is to show how quickly complex ‘creatures’ can be created by a few simple rules and endless iterations.

Having explained his program Dawkins artlessly presents it as a strong proof for Darwin’s theory. He calls the multi-dimensional cyberspace thronged with a potentially endless sequence of mutating life forms stretching out in all directions Biomorph Land, and the metaphor is invoked throughout the rest of the book.

Dawkins boyishly tells us that when he first ran the program and saw all the shapes appearing he was so excited he stayed up all night!

It’s difficult to know where to start in critiquing this approach, but two things spring to mind.

  1. At the point where he introduces the program the book still hasn’t delivered a clear exposition of Darwin’s theory of evolution by natural selection. During this chapter I began to realise it never would, and that instead the book would be all about Richard’s own ideas and inventions.
  2. Does Dawkins really think that a dyed-in-the-wool, Christian fundamentalist would be the slightest bit persuaded to change his or her lifelong beliefs by a lengthy explanation of a toy computer program which Richard has developed at home on his Dell computer? If he does, he is fabulously self-deluded and, as I’ve said, above all, naive about the ways of the world and how human beings actually think and live.

Dawkins’s declared intention is to change the world, or the way people think and what they believe about the world and the diversity of life around us – and yet virtually every word he writes – certainly extended passages like the long chapter devoted to the self-written computer program which gives the book its name – show you how completely inadequate his view of human nature is.

The book may well have explained and elucidated various concepts around evolution and genetics to an educated, secular audience which had hitherto (in 1986) had relatively few if any popular accounts to read on the subject. But given Dawkins’s fierce anti-Creationist rhetoric all through the book, his invention of all kinds of Christian or just ignorant critics of evolution throughout the book who he can pulverise with his arguments and analogies – it would be fascinating to learn if The Blind Watchmaker ever converted anyone to abandon their Christian or theist beliefs and become an atheist.

Précis of the contents of The Blind Watchmaker

Chapter 2 Bats and echolocation

Chapter 3 Cumulative changes in organisms can have massive consequences when subjected to non-random selection.

Chapter 4 Creationist propaganda often mocks the theory of evolution by pointing out that according to the theory exquisitely complicated features such as eyes must have evolved from next to nothing to their present stage of perfection and What is the point of half an eye? But Dawkins robustly replies that even 1% of an eye is better than no eye at all, and there are many animals with what you could call half or a quarter or less of a wing (i.e. bits of stretchable skin which help with gliding from tree to tree), which function perfectly well.

Chapter 5 ‘It is raining DNA outside’ as Dawkins describes the air outside his study window being full of down and dandelion seeds, innumerable flower seeds floating past on the wind. Why Life is more like a computer programme (i.e. DNA is a transmissible digital code) than pre-Darwinian ideas about blobs of matter and life forces.

Chapter 6 The idea of ‘miracles’ considered in the context of the 4.5 billion years the earth has existed, and a detailed summary of A.G. Cairns-Smiths theory of the origin of life (i.e. that replicating organic molecules originally took their structure from replicating inorganic clay crystals.)

Chapter 7 Genes are selected by virtue of their interactions with their environment, but the very first ‘environment’ a gene encounters is other genes, within the cell, and then in sister cells. Cells had to learn to co-operate in order to form multi-celled organisms. Cumulative selection produces arms races between rivals in ecosystems.

Chapter 8 Positive feedback and sexual selection, compared to steam engines, thermostats and pop music.

Chapter 9 Is devoted to taking down the theory of punctuated equilibrium put forward by the paleontologists Niles Eldridge and Stephen Jay Gould and opens with two pages about a hypothetical and very dense scholar of Biblical history.

Chapter 10 There are countless ways to categorise living things, as objects, but there is only one true tree of life based on evolutionary descent. Although in this, as everything else, there are different schools and theories e.g. phyleticists, cladists, pheneticists et al.

Chapter 11 A summary of various alternatives to Darwin – Lamarckism, neutralism, creationism, mutationism – are described and then demolished.

What is really striking about this final chapter is how cursory his dismissal of Christian creationism is – it only takes up a couple of pages whereas his analysis of Lamarckism took up ten. It’s as if, once he finally comes face to face with his long-cherished enemy, it turns out that he has… nothing to say.

Conclusion and recommendations

Back in the mid-1980s this book had a big impact, garnering prizes and making Dawkins a public intellectual. This suggests 1. the extent of the ignorance then prevailing about Darwin’s theory of evolution by natural selection and 2. the low bar set in the Anglo-Saxon world for the definition of ‘public intellectual’.

Then again, not many people actually had computers in 1986. I think the impact of the book came less from his countless and tiresome anti-Christian arguments, and more from the crisp modern way he compared DNA to a computer program. That was a genuinely innovatory insight thirty-five years ago. He was there right at the beginning of the application of computer technology to genetics and biology, a technology which has, ironically, rendered almost everything he wrote out of date.

– If you want to really understand Darwin’s theory there is no replacement for reading On The Origin of Species itself because, although many of the details may have changed and Darwin’s account notoriously contained no explanation of how variation came about (because he lacked any knowledge of genetics), nonetheless, the central idea is conveyed with a multitude of examples and with a persuasive force which really bring home what the theory actually consists of, far better than any later summary or populist account.

– If you want to read an up-to-date book about genetics and its awesome possibilities, I’d recommend Life At The Speed of Light: From the Double Helix to the Dawn of Digital Life by Craig Venter.

– If you want to read about the wonders of the natural world, you could do a lot worse than E.O. Wilson’s wonderful and inspiring book The Diversity of Life.

The Mr Bean of biology

Having ground my way through this preening, self-important book, I came to the conclusion that ‘Richard Dawkins’ is best seen as a brilliant comic creation, a kind of super-intellectual version of Mr Bean – filled with comic earnestness, bursting to share his boyish enthusiasm, innocently retailing memories of his first Meccano set or his knowledge of spy planes and motorbicycles, inventing fictional ‘distinguished philosophers’ and ‘sceptical scientists’ to demolish with his oh-so-clever arguments, convinced that his impassioned sincerity will change the world, and blissfully unaware of the ludicrous figure he cuts.

It’s a much more enjoyable book to read if you ignore Dawkins’s silly argufying and see it instead as a kind of Rabelaisian comedy, told by an essentially ludicrous narrator, with characters popping up at random moments to make a Creationist point before being hit over the head by Mr Punch’s truncheon – ‘That’s the way to do it!’ – interspersed with occasionally useful, albeit mostly out-dated, information about evolution and genetics.

Credit

The Blind Watchmaker by Richard Dawkins was published by the Harvard University Press in 1986. All references are to the 1994 Penguin paperback edition.

Related links

Reviews of other science books

Chemistry

Cosmology

Environment

Evolution

Genetics

Human evolution

Maths

Origins of Life

Particle physics

Psychology

1 Comment
by Simon on January 11, 2020  •  Permalink
Posted in Biology, Books, Evolution, Nature, Science
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Posted by Simon on January 11, 2020

https://astrofella.wordpress.com/2020/01/11/the-blind-watchmaker-richard-dawkins/

The Diversity of Life by E.O. Wilson (1992)

It is a failing of our species that we ignore and even despise the creatures whose lives sustain our own. (p.294)

Edward Osborne Wilson was born in 1929 and pursued a long career in biology, specialising in myrmecology, the study of ants, about which he came to be considered the world’s leading expert, and about which he published a massive textbook as well as countless research papers.

As well as his specialist scientific writing, Wilson has also published a series of (sometimes controversial) books about human nature, on collaborative species of animal (which led him to conceive the controversial theory of sociobiology), and about ecology and the environment.

(They’re controversial because he considers humans as just another complex life form, whose behaviour is dictated almost entirely by genetics and environment, discounting our ability to learn or change: beliefs which are opposed by liberals and progressives who believe humans can be transformed by education and culture.)

The Diversity of Life was an attempt to give an encyclopedic overview of life on earth – the myriads of life forms which create the dazzlingly complicated webs of life at all levels and in all parts of our planet – and then to inform the reader about the doleful devastation mankind is wreaking everywhere – and ends with some positive suggestions about how to try & save the environment, and the staggering diversity of life forms, before it’s too late.

The book is almost 30 years old but still so packed with information that maybe giving a synopsis of each chapter would be useful.

Part one – Violent nature, resilient life

1. Storm over the Amazon An impressionistic memoir of Wilson camping in the rainforest amid a tropical storm, which leads to musings about the phenomenal diversity of life forms in such places, and beyond, in all parts of the earth, from the Antarctic Ocean to deep sea, thermal vents.

2. Krakatau A vivid description of the eruption of Krakatoa leads into an account of how the sterile smoking stump of island left after the explosion was swiftly repopulated with all kinds of life forms within weeks of the catastrophe and now, 130 years later, is a completely repopulated tropical rainforest. Life survives and endures.

3. The Great Extinctions If the biggest volcanic explosion in recorded history can’t eliminate life, what can? Wilson explains the five big extinction events which the fossil record tells us about, when vast numbers of species were exterminated:

  • Ordovician 440 million years ago
  • Devonian 365 million years ago
  • Permian 245 million years ago
  • Triassic 210 million years ago
  • Cretaceous 66 million years ago

The last of these being the one which – supposedly – wiped out the dinosaurs, although Wilson points out that current knowledge suggests that dinosaur numbers were actually dropping off for millions of years before the actual ‘event’, whatever that was (most scientists think a massive meteor hit earth, a theory originally proposed by Luis Alvarez in 1980).

Anyway, the key thing is that the fossil record suggests that it took between five and 20 million years after each of these catastrophic events for the diversity of life to return to something like its pre-disaster levels.

Part two – Biodiversity rising

4. The Fundamental Unit A journey into evolutionary theory which quickly shows that many of its core concepts are deeply problematic and debated. Wilson clings to the notion of the species as the fundamental unit, because it makes sense of all biology –

A species is a population whose members are able to interbreed freely under natural conditions (p.36)

but concedes that other biologists give precedence to other concepts or levels of evolution, for example the population, the deme, or focus on genetics.

Which one you pick depends on your focus and priorities. The ‘species’ is a tricky concept to define, with the result that many biologists reach for subspecies (pp.58-61).

And that’s before you examine the record chronologically i.e. consider lineages of animals which we know stretch back for millions of years: at what point did one species slip into another? It depends. It depends what aspects you choose to focus on – DNA, or mating rituals, or wing length or diet or location.

The message is that the concepts of biology are precise and well-defined, but the real world is far more messy and complicated than, maybe, any human concepts can really fully capture.

5. New Species Wilson details all the processes by which new species have come about, introducing the concept of ‘intrinsic isolating mechanisms’, but going on to explain that these are endless. Almost any element in an environment, an organisms’s design or DNA might be an ‘isolating mechanism’, in the right circumstances. In other words, life forms are proliferating, mutating and changing constantly, all around us.

The possibility for error has no limit, and so intrinsic isolating mechanisms are endless in their variety. (p.51)

6. The forces of evolution Introduces us to a range of processes, operating at levels from genetics to entire populations, which drive evolutionary change, including:

  • genetic mutation
  • haploidy and diploidy (with an explanation of the cause of sickle-cell anaemia)
  • dominant and recessive genes
  • genotype (an individual’s collection of genes) and phenotype (the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment)
  • allometry (rates of growth of different parts of an organism)
  • microevolution (at the genetic level) and macroevolution (at the level of environment and population)
  • the theory of punctuated equilibrium proposed by Niles Eldredge and Stephen Jay Gould (that evolution happens in burst followed by long periods of no-change)
  • species selection

7. Adaptive radiation An explanation of the concepts of adaptive radiation and evolutionary convergence, taking in Hawaiian honeycreepers, Darwin’s finches on the Galapagos Islands, the cichlid fish of Lake Victoria, the astonishing diversity of shark species, and the Great American Interchange which followed when the rise of the Panama Isthmus joined previously separated North and South America 2.5 million years ago.

Ecological release = population increase that occurs when a species is freed from limiting factors in its environment.

Ecological constraint = constriction in the presence of a competitor.

8. The unexplored biosphere Describes our astonishing ignorance of how many species there are in the world. Wilson gives the total number of named species as 1.4 million, 751,000 of them insects, but the chapter goes on to explain our complete ignorance of the life forms in the ocean depths, or in the rainforest canopies, and the vast black hole of our ignorance of bacteria.

There could be anything between 10 million and 100 million species on earth – nobody knows.

He explains the hierarchy of toxonomy of living things: kingdom, phylum or division, class, order, family, genus, species.

Equitability = the distribution of diversity in a given location.

9. The creation of ecosystems Keystone species hold a system together e.g. sea otters on the California coast (which ate sea urchins thus preventing the sea urchins eating the kelp, so giving rise to forests of kelp which supported numerous life forms including whales who gave birth close to the forests of kelp) or elephants in the savannah (who, by pushing over trees, create diverse habitats).

Elasticity.

The predator paradox – in many systems it’s been shown that removing the top predator decreases diversity).

Character displacement. Symbiosis. The opposite of extinction is species packing.

The latitudinal diversity gradient i.e. there is more diversity in tropical rainforests – 30% of bird species, probably over half of all species, live in the rainforests – various theories why this should be (heat from the sun = energy + prolonged rain).

10. Biodiversity reaches the peak The reasons why biodiversity has steadily increased since the Cambrian explosion 550 million years ago, including the four main steps in life on earth:

  1. the origin of life from prebiotic organic molecules 3.9 billion years ago
  2. eukaryotic organisms 1.8 billion years ago
  3. the Cambrian explosion 540 to 500 million years ago
  4. the evolution of the human mind from 1 million to 100,000 years ago.

Why there is more diversity, the smaller the creatures/scale – because, at their scale, there are so many more niches to make a living in.

Part three – The human impact

It’s simple. We are destroying the world’s ecosystems, exterminating untold numbers of species before we can even identify them and any practical benefits they may have.

11. The life and death of species ‘Almost all the species that have ever lived are extinct, and yet more are alive today than at any time in the past (p.204)

How long do species survive? From 1 to 10 million years, depending on size and type. Then again, it’s likely that orchids which make up 8% of all known flowering plants, might speciate, thrive and die out far faster in the innumerable microsites which suit them in mountainous tropics.

The area effect = the rise of biodiversity according to island size (ten times the size, double the number of species). Large body size means smaller population and greater risk of extinction. The metapopulation concept of species existence.

12. Biodiversity threatened Extinctions by their very nature are rarely observed. Wilson devotes some pages to the thesis that wherever prehistoric man spread – in North America 8,000 years ago, in Australia 30,000 years ago, in the Pacific islands between 2,000 and 500 years ago – they exterminated all the large animals.

Obviously, since then Western settlers and colonists have been finishing off the job, and he gives depressing figures about numbers of bird, frog, tree and other species which have been exterminated in the past few hundred years by Western man, by colonists.

And now we are in a new era when exponentially growing populations of Third World countries are ravaging their own landscapes. He gives a list of 18 ‘hotspots’ (New Caledonia, Borneo, Ecuador) where half or more of the original rainforests has been heart-breakingly destroyed.

13. Unmined riches The idea that mankind should place a cash value on rainforests and other areas of diversity (coral reefs) in order to pay locals not to destroy them. Wilson gives the standard list of useful medicines and drugs we have discovered in remote and unexpected plants, wondering how many other useful, maybe life-saving substances are being trashed and destroyed before we ever have the chance to discover them.

But why  should this be? He explains that the millions of existing species have evolved through uncountable trillions of chemical interactions at all levels, in uncountably vast types of locations and settings – and so have been in effect a vast biochemical laboratory of life, infinitely huger, more complex, and going on for billions of years longer than our own feeble human laboratory efforts.

He gives practical examples of natural diversity and human narrowness:

  • the crops we grow are a handful – 20 or so – of the tens of thousands known, many of which are more productive, but just culturally alien
  • same with animals – we still farm the ten of so animals which Bronze Age man domesticated 10,000 years ago when there is a world of more productive animals e.g. the giant Amazon river turtle, the green iguana, which both produce far more meat per hectare and cost than beef cattle
  • why do we still fish wild in the seas, devastating entire ecosystems, when we could produce more fish more efficiently in controlled farms?
  • the absolutely vital importance of maintaining wild stocks and varieties of species we grow for food:
    • when in the 1970s the grassy-stunt virus devastated rice crops it was only the lucky chance that a remote Indian rice species contained genes which granted immunity to the virus and so could be cross-bred with commercial varieties which saved the world’s rice
    • it was only because wild varieties of coffee still grew in Ethiopia that genes could be isolated from them and cross-bred into commercial coffee crops in Latin America which saved them from devastation by ‘coffee rust’
  • wipe out the rainforests and other hotspots of diversity, and there go your fallback species

14. Resolution As ‘the human juggernaut’ staggers on, destroying all in its path, what is to be done? Wilson suggests a list:

  1. Survey the world’s flora and fauna – an epic task, particularly as there are maybe only 1,500 scientists in the whole world qualified to do it
  2. Create biological wealth – via ‘chemical prospecting’ i.e. looking for chemicals produced by organisms which might have practical applications (he gives a list of such discoveries)
  3. Promote sustainable development – for example strip logging to replace slash and burn, with numerous examples
  4. Wilson critiques the arguments for
    • cryogenically freezing species
    • seed banks
    • zoos
  5. They can only save a tiny fraction of species, and then only a handful of samples – but the key factor is that all organisms can only exist in fantastically complicated ecosystems, which no freezing or zoosor seed banks can preserve. There is no alternative to complete preservation of existing wilderness

15. The environmental ethic A final summing up. We are living through the sixth great extinction. Between a tenth and a quarter of all the world’s species will be wiped out in the next 50 years.

Having dispensed with the ad hoc and limited attempts at salvage outlined above, Wilson concludes that the only viable way to maintain even a fraction of the world’s biodiversity is to identify the world’s biodiversity ‘hot spots’ and preserve the entire ecosystems.

Each ecosystem has intrinsic value (p.148)

In the last few pages he makes the ‘deepest’ plea for conservation based on what he calls biophilia – this is that there is all kinds of evidence that humans need nature: we were produced over 2 million years of evolution and are descended from animals which themselves have encoded in the genes for their brains and nervous systems all kinds of interactions with the environment, with sun and moon, and rain and heat, and water and food, with rustling grasses and sheltering trees.

The most basic reason for making heroic efforts to preserve biodiversity is that at a really fundamental level, we need it to carry on feeling human.

On planet, one experiment (p.170)

Conclusion

Obviously, I know human beings are destroying the planet and exterminating other species at an unprecedented rate. Everyone who can read a newspaper or watch TV should know that by now, so the message of his book was over-familiar and sad.

But it was lovely to read again several passages whose imaginative brio had haunted me ever since I first read this book back in 1994:

  • the opening rich and impressionistic description of the rainforest
  • a gripping couple of pages at the start of chapter five where he describes what it would be like to set off at walking pace from the centre of the earth outwards, across the burning core, then into the cooler mantle and so on, suddenly emerging through topsoil into the air and walking through the extraordinary concentration of billions of life forms in a few minutes – we are that thin a layer on the surface of this spinning, hurtling planet
  • the couple of pages about sharks, whose weird diversity still astonishes
  • the brisk, no-nonsense account of how ‘native’ peoples or First Peoples were no tender-hearted environmentalists but hunted to death all the large megafauna wherever they spread
  • the dazzling description of all the organisms which are found in just one pinch of topsoil

As to the message, that we must try and preserve the diversity of life and respect the delicate ecosystems on which our existence ultimately depends – well, that seems to have been soundly ignored more or less everywhere, over the past thirty years since the book was published.

Credit

The Diversity of Life by Edward O. Wilson was published by the Harvard University Press in 1992. All references are to the 1994 Penguin paperback edition.

Related links

Reviews of other science books

Chemistry

Cosmology

Environment

Genetics

Human evolution

Maths

Origins of Life

Particle physics

Psychology

4 Comments
by Simon on January 9, 2020  •  Permalink
Posted in Biology, Books, Environment, Evolution, Science
Tagged , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Posted by Simon on January 9, 2020

https://astrofella.wordpress.com/2020/01/09/the-diversity-of-life-e-o-wilson/

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