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Six Degrees by Mark Lynas

I might as well admit it, I’ve been massively in denial about climate change.   I have worried about it in the past (I even wrote a couple of stories about the threat: ‘Greenland’ and ‘Rat Island’).  But latterly, I’ve been minimising the problem to myself, even persuading myself that there might be upsides as well as downsides. ( After all, I’ve foolishly been telling myself, there have been times in the past when the Earth was so warm that there was no polar ice at all.)

This book has certainly opened my eyes.   To deal with the ‘upsides as well as downsides’ point first: yes, there have been times in the past that were much warmer than now, but they came about as a result of gradual temperature changes over millions of years.  What we are facing now is a change so sudden that life will not have time to adapt.   It is comparable to the great extinction events we find in the geological record, which nearly ended  life on the planet.   And indeed this really could end up that way.   Lynas takes us through six scenarios, from one to six degrees (based on the average increase in the global temperature), and the six degree option is pretty grim reading.

Even the one degree option isn’t exactly pretty.

Of course, as Lynas repeatedly cautions, the science is inexact.  The global weather is an incredibly complex system in which countless different factors interact.  We know that meteorologists can’t precisely predict the weather day by day, and clearly they can’t hope to get it exactly right when looking decades into the future.  But there is no dispute that increases in greenhouse gases such as carbon dioxide and methane will increase the global temperature, and there is no doubt that human activity has increased the presence of these gases.   The details may not all be right, but the overall story is indisputable.  And (really!) unless we do something about it, it will have a lot more implications than just things getting a bit hotter.

Nor will it just mean events like the loss of the beautiful coral reefs: sad but with little direct impact on our lives. It will mean the inundation of coastal cities, and of huge swathes of land, such as Bangladesh and the coast of China, where hundreds of millions live.  It will mean the desertification of much of southern Africa and southern Europe.  It will mean more and bigger hurricanes, wreaking destruction over a much wider part of the globe.  It will mean positive feedback loops kicking in – the release of methane from newly thawed permafrost, for instance, or the burning of the entire Amazon forest – that will accelerate these kinds of events until they are running away so fast that nothing can stop them.  And of course these things will have huge geopolitical consequences: mass migration, wars over land and water, countries defending themselves like fortresses against the desperate beating on their gates.

It struck me, reading this, and confronting my own denial (which is like the denial of alcoholics, the denial of rapists, the denial of child abusers, who simply cannot bear to face the harm they do), that if we don’t try and do something about this, it pretty much invalidates any other claim we might wish to make to be doing our bit to make the world a better place.  What is the point of working for human rights, if we let the world degenerate into the kind of dog-eat-dog place where human rights are as worthless as paper walls in a hurricane?   What is the point of thinking about the needs of developing countries, if we stand by while they become deserts or seas?

In fact, never mind these grand public issues, how can we even claim to really care about our own children and grandchildren, if we don’t do anything to stop their world being ruined?

The crazy part is that this is all the result of an almighty bonfire we’ve been having, burning up, in a matter of decades, fossil fuels that took millions of years of solar energy to form.   And, since the fuel isn’t infinite, it will run out anyway, and the bonfire will end whether we want it to or not.  So it’s not even a choice as to whether to stop or not stop the burning.  It’s a choice between stopping now, before it is too late, or in a few decades, when it will be.  We are gambling the future of our species for the sake of a decade or two of business as usual.

I’m going to write more about this.  I think there’s a task for science fiction here, a responsibility even.  Let’s get back to exploring worlds that could really happen, and move away from writing about starships and galactic empires that we know quite well will never ever come about.

Six Degrees on Amazon UK.

Six Degrees on Amazon US.

 

Pity the Billionaire, by Thomas Frank

The Great Depression between the wars resulted in a grassroots backlash against capitalism, and moves towards greater state intervention in the economy, but, in the US today, the most significant political movement to have arisen out of the current economic crisis, is one that calls for still less state intervention.  Thomas Frank illustrates the difference between the two eras by contrasting the ways in which the 1773 Boston Tea Party was invoked in each one.  In 1932, a farmer who took illegal direct action to support his demand for government help for poverty-striken farmers, justified his action by saying ‘Seems to me there was a tea-party in Boston that was illegal too.  What about destroying property in Boston harbour when our country was started?’   But ‘what makes the rebel’s blood boil today,’ Frank writes, ‘is not the plight of the debtor but the possibility that such “losers” might escape their predicament – that government might step in and do the things that those Iowa farmers wanted it to do eighty years ago.’  At a Tea Party rally in 2009 one sign read ‘Your mortgage is not my problem.’  (Given the popularity of Christianity on the American Right, I’m intrigued to know how ‘Your mortgage is not my problem’ can be squared with ‘Love your neighbour as yourself’ [Matthew 12:31], but let that pass.)

This excellent book, packed with pithy observations, is an exploration of a bizarre phenomenon: a crisis caused by unfettered capitalism, followed by populist demands for yet more unfettered capitalism.  The apparent contradiction is explained in part by the fact that this new political movement doesn’t identify the core problem as the collapse of the capitalist financial institutions, but rather as the government bail-out that followed, not only because it resulted in a debt which the taxpayer has to pay, but because it distorted the workings of the market.  Ironically enough, given their hatred of the term ‘liberal’, this lot are extreme economic liberals.  They view the free unfettered market as being the God-given natural order, and any intervention into it as unnatural, tyrannical and ‘socialist’.  (‘Clear-thinking Americans must begin to view Socialism as a prosecutable crime and recognize those who conspire to advance it as in fact criminals,’ chillingly writes one Tea Party pamphleteer cited by Frank.)

To some degree I agree that markets are ‘natural’, in the sense that I believe that people will, almost inevitably, do deals with one another, and try and get the best return they can for their work.  (It happened even in states such as the Soviet Union which tried to abolish the market.)   But politics are also ‘natural’ in this exact same sense of stuff that is bound to happen, bound to be part of the picture, as is expecting the community as a whole to help out in a crisis, collective action etc etc.   Capitalism, and the notion of the ‘free market’ are, after all, very recent historical developments,  and, as Frank points out, the ‘pure Capitalism’ that these people dream about has never existed, and could never exist.   It is a one-dimensional concept, an essentially Utopian idea which, like all Utopian ideas, only works if you exclude reality from your worldview.

Frank is interesting on the way in which this libertarian right wing mirrors, sometimes quite consciously, the left.   It uses the language of injustice and class war, for instance, to pit ‘ordinary decent Americans’ (including billionaires!) against a ‘liberal’ elite, which it sometimes characterises as fascist or Nazi.  And Frank sees its adherents as blinkered in much the same way as the leftists who visited Stalin’s Soviet Union in the years after the Depression, and managed to avoid noticing famine, terror and gulags, and see instead a socialist Utopia.  What is terrifying in all these cases is the capacity of human beings to persuade themselves that something is its exact opposite.  ‘Freedom is Slavery’, ‘War is Peace’, ‘Poverty is Plenty’, went the slogans in Orwell’s Oceania, and now we have billionaires as victims, liberals as Nazis, and poor people as the cause of the problem.

Of course, as Frank points out, the misty soft-focus dream of an America consisting of decent hard-working business people (regular guys like you and me) competing in the market place, is essentially a facade (rather in the same way, I suppose, that the rhetoric and iconography of socialism was used as a facade for tyranny under Stalin).   The folksy Tea Party rhetoric distances the movement from big business, depicting the latter as monopolistic, in cahoots with the state, on the scrounge for subsidies and lucrative government contracts, but it is nevertheless big business’s purposes that the Tea Party serves.

We have no exact equivalent of the Tea Party in the UK, but there are plenty of people here who have taken the opportunity presented by the crisis in capitalism, to roll back the state still further, and give unfettered capitalism still more freedom to act.   I strongly recommend this book.

Pity the Billionaire on Amazon UK.

 

Unfairness has consequences too

In a previous post, I expressed amazement at the bonus being paid to the CEO of the largely state-owned Royal Bank of Scotland.  It wasn’t, I must admit, a very original thought.   So many people said the same thing, in fact, that in the end Mr Hester bowed to the pressure and did without the bonus*.

I’ve heard a number of commentators since being quite critical of the pressure that was placed on him: (1) he wasn’t in charge of any bank at the time of the financial collapse, (2) you have to pay top money to get top people, and if we punish top businessmen like Mr Hester, they’ll just head off to more business-friendly places, and we’ll all end up worse off,  (3) the economic crisis is a systemic problem, and it is simplistic to pin it on a few individuals.

The ‘top money for top people’ argument has some force, even if we would like to deny it.  You only have to look at football.  We know that no serious football club would keep its position if it stopped paying players these enormous sums.  We know that players readily cross national frontiers to further their careers.  We want the clubs we support to win.  And we know that if we were in the same position as the footballers, we would think ouselves lucky, but be unlikely to volunteer for a pay cut.

And yes it is superficial to pin the blame for a systemic problem on a few individuals.    I worked for many years as a social worker, and, since members of my own profession are from time to time singled out for a media lynching (see my story Johnny’s New Job), I don’t find it hard to see the force of this argument.  We human beings are very quick to identify scapegoats as a way of distancing ourselves from  our own complicity, and (though I am fairly sure that CEOs of multi-national corporations are well able to look after themselves) demonising individuals and groups is neither an attractive trait, nor a good way of getting to the bottom of problems

But the fact remains that people across the country are losing their jobs, their incomes, their place in the community, because of debts incurred by the government when it bailed out the banking system.  It just does not feel fair in this context for people in the banking industry itself to continue to recieve the same immense financial rewards as ever.   Yes, it’s quite possible that some talented businessmen will choose to leave the country and find more lucrative work elsewhere, just like footballers do, and possible too that this could have negative consequences for the competitive edge of some of our country’s industries.  It really might be so.  But are we really going to accept this argument as being one that trumps all others?

Here’s the problem with that.  We are told we should think about what’s best for the economy, rather than make purely emotional arguments about fairness.  And we are asked to take very seriously the factors that might influence the choices of top businessmen.  (Since we have used the word ’emotional’, let’s be clear that these are factors to do with the businessmen’s feelings: there are only so many yachts and planes a person can actually use).   But this is not football, and we’re not spectators watching from the stands.  We’re all on the field together here, we all have feelings, and top businessmen are not the only people who make choices, or are influenced by the way they are treated.

Nor are they the only people whose choices  impact on us all.

(Picture from here, and borrowed with thanks: no copyright information given)

*Or so I thought.  Since I wrote this, it has emerged that Mr Hester has accepted £600,000 – worth of shares instead of his bonus!

Neither imaginary nor real

I suppose most people can remember plotting equations onto graph paper at school.  y = x produces a straight line.  y = 2x generates a steeper line.

And then you try y = x2 and find that it generates a beautiful smooth ever-steepening curve, a parabola, while  y = 1/x generates a hyperbola, a pair of curves that get closer and closer to the axes of the graph, but never quite reach them.

The following is a bit more complicated than y = x2 or y = 1/x, but it can still be explained in a few lines, and can still be understood by someone like me, whose maths ability hit a glass ceiling at about the sixth form level.

First, you let the y axis represent ‘imaginary numbers’ (that is: multiples of ‘i’, which is the notional square root of minus one), and you let the x axis represent real numbers (i.e. the ordinary kind: 1, 2, 1.5, -1, 101, 0.3: that kind of thing).  Your graph is now what is known as a ‘complex plane’, because any so-called ‘complex number’ (that is: a combination of a real and an imaginary number) can be represented on it by a point.

Set the complex plane on one side, like pastry, for use later.

Now, consider the following formula zn+1 = zn2 + c.   It took me a while to get the hang of this, but it is a formula for generating a sequence of numbers.  The members of the sequence are labelled z1, z2, z3, z4 ….. etc, and all the formula tells you is that you generate each member of the sequence (starting with z0 = 0) by multiplying the previous member of the sequence by itself (i.e. squaring it), and adding a number of your choice designated c, which remains constant for the whole sequence.

So, if we take c as 1, the sequence we get is:

z0 = 0

z1 = 02 + 1 = 1

z2= 12 + 1 = 2

z3 = 22 + 1 = 5

….and so on

What you find is that starting with some values of c, such as 1, the sequence generates higher and higher numbers, as just shown, but for other numbers, the sequence is ‘bounded’, which is to say it oscillates between fixed points.   For instance, if you set c as ‘i’ the sequence runs: 0, i, (-1 + i), −i, (−1 + i), −i… and then the same, on and on.  Or, if you set it as -1, the sequence just bounces back and forth between 0 and -1.

So now, returning to the complex plane you set aside earlier, you mark all the points on the plane that lead to a bounded sequence in black, and you leave the other points unmarked.   And what do you get?   Well, even at first sight it’s a lot more complicated than a parabola, but that’s only the beginning of it.

It is, of course, the Mandelbrot set, and, famously, its complication is without limits.  Look at it at higher and higher magnifications, and you never reach the end of its curls and wiggles.  Home in on what looks like a smooth line, and you see tiny shapes on the surface.  Zoom in still closer, and these shapes start to resemble shapes that you had already seen at lower levels of magnification.  Zoom in still more, and on the edges of these shapes too, new curls and wiggles start to appear.  (There’s a video of it here).  It is completely bottomless.

And now remember that this infinite complexity, this mad meaningless order, is generated by a comparatively simple rule which can be described in a few lines, as I have just done. This thing is not real.  It has no objective existence in the world.

And yet it is not human-made either.  These shapes are not the product of a human mind.  They have been discovered, not created.  This thing is neither real nor imaginary.

Think about it hard enough, and I reach a boundary beyond which my mind will no longer go, but across which I sense a strange awful place where mind and matter, real and imaginary, order and chaos, are not separate things at all.

Some people find the Mandelbrot set beautiful, and I suppose it is, but for me it is the beauty of a poisonous flower.

Easter Island

I was interested by a recent debate on Radio 4 between Friends of the Earth’s Tony Juniper, and the former Tory Chancellor of the Exchequer, Nigel Lawson.   They were talking about shale gas, and Lawson’s position was simple: this stuff is cheaper than renewable energy, and therefore that’s what we should go for.   Tough, hardnosed, realistic.  Like the guy on Easter Island, who argued that wood was cheaper than other fuels, so it was just silly not to chop down the last tree.

‘But how are we going to make boats?’ someone wondered, as they were all toasting themselves round the fire.

“But I don’t like science fiction.”

“I don’t like science fiction. I like my novels to be about ‘real’ people doing real things in the real world,” was the initial reaction of Emma Higginbotham in an article about Dark Eden in the Cambridge Evening News. She goes on to say,  “I decide to read the first couple of pages and skim through the rest. But to my amazement, I’m completely hooked by page two, and devour the whole thing in a few greedy sittings.”

Phew!  (And thanks, Emma!)  But it is frustrating how many people’s initial reaction is the same as hers – “I don’t like science fiction” – because, unlike her, most people don’t have a reason to test that initial reaction and so prove themselves wrong: they don’t like science fiction and that’s that.

Why is this?  The same people would, I imagine, quite happily read a book set in the past, or in a faraway country, or an imaginary country.  They’d even happily read a book set in the future (1984), or one with science fictional elements such as time travel (The Time Traveller’s Wife), cloning (Never Let Me Go), or the extinction of human kind (Children of Men), provided it was by an author known as ‘mainstream’.  So why this squeamishness about things that say ‘science fiction’ on the tin?

It wasn’t always so.  In the 60s and 70s, bookreading households would have thought nothing of having Day of the Triffids on their shelves, or maybe a few Ballards.   My father, I guess, classes as an SF fan, since he had a whole row of SF books (Pohl & Kornbluth, Heinlein, van Vogt, Ballard…), but it was my mother who recommended books to me by John Wyndham and Brian Aldiss: it just wouldn’t have struck her that they were SF and therefore beyond the pale.  Of course even then there were harder core SF books that my parents would have regarded as outside their range, but my point is there was a permeable membrane between SF and the rest of literature, not (to mix metaphors completely) a Berlin Wall.   Somewhere between now and then, SF has come to be regarded by many as the exclusive province of Comic Book Guy.

Yes, some science fiction is poorly written, some is ‘toys for the boys’, some caters for immature, and sometimes not very attractive, impulses.   But isn’t that true of romantic fiction also?   Isn’t it true of any kind of fiction at all?  I’m not saying that I think everyone should like all science fiction, only that they should be prepared to admit the possibility that they might like some of it.

All fiction works by making stuff up, partly for fun and partly to provide a new imaginative perspective on the real world.   It seems a pity to me – and not just because it means less people will buy my stuff – that a particular kind of ‘making stuff up’, should be so readily dismissed by readers and writers.  That seems to me to be throwing away a very rich resource indeed.

Non-science fiction readers who read my books, often seem to like them to their own surprise (like Emma Higginbotham, or like the judges of the Edge Hill Prize).  I would really like to persuade more to give it a go.

Launching Dark Eden

This (approximately) is what I said about Dark Eden at the launch party last night at Heffer’s bookshop in Cambridge:

Thanks to everyone for showing up, and to Heffers and Corvus for organising this event.   And thanks to everyone who contributed to the book itself.  Special thanks to Mathilda Imlah my editor at Corvus for her input, which made this a much better book than it otherwise would have been.

Eden is a planet without a star, that’s why it’s dark.   (I believe such planets are thought to be possible by those who know about these things, and may even be more common than the kind of planet that circles round a star.)

Eden isn’t completely dark though. There is life there, powered by the planet’s own heat.   (I believe this is thought to be possible also).  The life gives out light, and everywhere, at higher altitudes, is warm enough for human life.

There is no day or night, there are no seasons. The only rhythms by which time can be measured are biological ones.

Five people stumbled on the planet in a damaged spaceship. (Interstellar travel, is something I’m not sure really is possible, but without it there wouldn’t be much of a story) . These five people spent some time on Eden, and then three of them decided to try and get go back to Earth in their broken ship. The other two decided to remain, a man and a woman – Tommy and Angela, or Gela as she’s known. They didn’t know each other before then, and Gela wasn’t sure she even liked Tommy that much, but they decided to stay and wait for help to come.

160 years later their descendants – the descendants of one not very successful marriage – are still waiting, in a single, inbred community that calls itself Family, stuck in one valley that is lit and heated by trees that pump sap down into hot rocks underground, and pump it up again.

 hmmmph hmmmph hmmmph, they go

And of course, in a forest of hundreds of thousands of these geothermal trees, those pulsing sounds all merge together, and becomes a constant hmmmmmmmmmm that is the background to everyone’s lives.

These people have never left the valley. It is surrounded by icy mountains, which, without trees, are also completely pitch dark.

The people live by hunting and gathering, using implements made of stone, wood and animal sinews. They still live in hope that one day they will be able to return to a planet full of light that none of them has ever seen. They long for that light and for the legendary wonders there, like boats that fly, and horses you can ride on, and lecky-trickity that runs along strings.

And for this reason they believe they must never leave the spot where people first landed.

The central character is a boy called John Redlantern, who decides all this is crazy, and is determined to get people moving, out of the valley and across the mountains. To achieve this he commits a terrible transgression, and from this first transgression, more follow, bringing violence and hatred into the world.

The story is told partly by John – and it is John who is telling it in the passage I’m going to read you – partly by his girlfriend Tina Spiketree (sort of his girlfriend. Monogamy is not part of the culture of Eden), partly by his loyal cousin Gerry, his clever, lame cousin Jeff and his kind aunt Sue.

Apart from being about these events on the planet Eden, I see the story as being about families and societies and about the past, and our relationship with the past, and with things that we’ve lost and have to leave behind.

In the short passage I’m about to read you, it is the middle of the gathering that Family calls Any Virsry. It’s an occasion when they sort out problems, make rules, and listen to lectures about how great it was on Earth, but it’s also an occasion when they re-enact their own story.

So. Imagine a forest clearing, under a starry sky. The trees have no leaves at all, and they are warm, or even scalding hot to the touch. They have luminous flowers, and small creatures vaguely reminiscent of earthly bats, swoop and dive among those shining flowers, hunting creatures vaguely reminiscent of earthly insects. (Though on Eden bats have arms as well as legs, and small almost human hands)

500 people are packed in round the edge of the clearing: old, young, adults, children, dressed in animal skins, many with badly deformed faces or twisted feet. They are all looking into the middle of the clearing, where there is a circle of stones – their most important relic of all – to mark the place where the landing vehicle came down from that spaceship 160 years ago. John Redlantern is among this crowd of people.

In the centre of the clearing five people have been acting out the story of how those first five people came to Eden. Two of them are playing Tommy and Angela, the ancestors of everyone present (People even swear by them now: ‘Tom’s dick,’ they say, ‘Gela’s tits’ or ‘Gela’s heart’). One of them is playing a man called Michael who is one of the three who decided to try and get back to Earth. The Three Companions as they’re called.

People swear by Michael sometimes too but when they swear by him, for reasons that you’ll soon see, they always say ‘Michael’s names.’

 **

This part of the story is called Michael and His Names, and it’s the bit that kids love the best.

‘Where is this place anyway?’ Angela asks. ‘What do you think it’s called?’

‘I don’t know,’ says Michael. ‘Let me think. Perhaps we could call it…’

He pauses.

‘It’s Eden!’ yell out all the kids round Circle, because of course any fool knows that!

Michael frowns, like he thinks he’s heard something but he’s not sure. He holds his hand to his ear.

‘Perhaps,’ he says, ‘we could call it…’

‘Eden!’ the kids yell again even louder.

‘I don’t know,’ he says, ‘it’s on tip of my tongue, but I can’t quite think of the name.’

‘Ed-en!’ the kids bellow.

Michael smiles.

‘E-den,’ he says slowly, ‘I think we could call it Eden.’

The kids all cheer.

‘Look at this,’ says Angela, ‘what’s this?’

She’s pointing to a whitelantern tree.

‘It’s a tree!’ the kids yell out, laughing. How could anyone be so dumb as to not know what a tree was?

I guess it made everyone feel good to see Angela and all of them not knowing these things we knew so well, after we’d had to listen for so long to that big big list of wonderful things they had on Earth which we didn’t understand at all. It was kind of reassuring to know that they didn’t even know what a tree was, when we were feeling useless useless for not knowing about metal and telly vision and horses and the Single Force.

‘We’ll call it…’

Michael hesitated. The kids laughed. They loved all this. I suppose I did too. I loved it but I at the same time hated it for trapping us and making us feel so helpless and babyish and small.

‘We’ll call it…’

‘A tree!’ yell out the kids.

The grownups are smiling and laughing too, and a lot of them are joining in with the kids. Everyone was tired tired, what with the wakings being changed, and the long weary list of Earth Things, and the Laws and the Genda and all, but now everyone was brightening up again.

‘We’ll call it…. a… tree!’ goes Michael, who is really a skinny little guy of forty wombs or so called Luke Brooklyn who’s mainly known in Family for being clever with blackglass.

Everyone cheers.

‘And what’s this?’ asks Tommy, looking over from Big Sky-boat which he’s trying to fix and pointing at a little jewel-bat swooping overhead.

‘What’s what?’ goes Michael, looking where Tommy pointed. The bat has gone.

‘This!’ says Tommy, pointing to another bat.

‘What’s what?’ goes Michael again.

‘This here!’ says Tommy, showing him another bat again

‘Oh that,’ says Michael. ‘Well I don’t know about that. I’ve no idea. I’ve never seen anything like it. I don’t know what to say.’

‘It’s a bat!’ yell the kids.

Michael frowns and screws up his face. He can almost hear them but not quite.

‘It’s a bat!’ they yell again.

He holds his hand to his ear.

‘It’s a bat!’ the kids bellow again.

He frowns like he still can’t hear, and he scratches his head.

Michael was called the Name-Giver because he gave us the words that we still use for all the animals and plants that live in Eden, and found out things about them like how they came up from Underworld when everything was ice, and how dry starflowers could feed our skin like Sun did on Earth. But in the Show he was also the name-hearer, because he didn’t actually choose the names. He only heard us, faintly faintly, shouting them back to him from the future. And then he took them, and gave them to the things in the world, and sent them out again to us the slow way, through the five six long generations between us and him.

‘It – is – a – BAT!’ the kids yell even louder.

He nods. He smiles.

‘I think we’ll call it a bat!’ he says, and everybody cheers.  [From Dark Eden: pages 128-131]

 * *

I hope you read the book, and I hope you enjoy it.

If you do enjoy it, please do recommend it to other people.

If you don’t, though, I advise you to keep it to yourself.  I’d hate you to show yourself up.

Dark Eden

 

Mad money

It seems so bizarre that the chairman of a largely state-owned bank, RBS, should be thinking he ought to get a £1,000,000 bonus on top of his salary that you have to pinch yourself. Even more bizarre that the government, even for a moment, should hesitate to block this. Imagine if the NHS were to announce at this point that its boss needed a £1m bonus!

But that’s how it is, and here is a petition about it.

A pebble on Mount Everest

It occurred to me while I was driving home that, if it wasn’t for Adolf Hitler, I wouldn’t exist.

I’m not sure if my parents would have met at all if it wasn’t for my father’s family moving out of London as a result of Hitler’s war, but, even if they had, it’s inconceivable that their lives would have gone down such a similar track – and I’m trying not to be too graphic here: it’s my parents I’m talking about – that the, er, same combination of genetic material would have occurred that ended up resulting in me.  That would be like throwing billions of dice on two different occasions and coming up with exactly the same combination of numbers.

It’s not just me of course.  No one else below the age of about 70 would exist either.  There surely can’t be any doubt that the disruption of lives in all the countries involved in that war was sufficient to ensure that every single one of their citizens would have had their daily timetables put out at least to the extent that, assuming they survived the war at all, they had a different set of children, if not entirely different partners.  Even in countries not directly touched by the war, people would soon feel enough of the effects of what was happening in the world outside for the pattern of their days to be altered to at least that extent.

And then – I was driving along the A14 in the dark, the lights of other cars all around me – it occurred to me that any individual in the past would have the same affect: it didn’t even have to be a history-changer like Hitler.  Go back to the 18th century, and disrupt the daily routine of one randomly chosen person anywhere in the world, and by now we’d be a completely different set of human beings on Earth.

In fact, I decided – I was now not far from the Newmarket turnoff – never mind people, a stone would do the job.  Travel back in time with a small pebble and place it on the top of mount Everest.  No one would notice any change, but the airflow over the mountain would not be quite the same.  Every moment millions of molecules would end up in different places from where they otherwise would have been, and they in turn would displace other molecules.   Quite quickly, the entire atmosphere would be differently configured from what it would otherwise have been: trivially different, but still different.

And then weather events would occur very slightly earlier or later than they otherwise would have done.  Departures would be delayed by seconds, journey times increased or decreased, so that people went to bed a few seconds earlier or a few seconds later.  And accidents would occur that wouldn’t otherwise have happened, or fail to occur when otherwise they would, and so on and so on.   And each of these events would in turn change the flow of things just like that pebble still sitting on top of the mountain, albeit now covered with snow.   And by the time a century had gone by, that one pebble would have caused an entirely different cast of human beings to be living on Earth from the ones who would have otherwise come into being and lived out their important irreplacable lives.

Not a very original thought, I know – it’s butterflies’ wings and all of that, something which has been written about many times, including by me – but it absorbed me sufficiently that I forgot where I was on the road, and turned off at the Newmarket exit rather than continuing straight on to Cambridge, delaying my arrival home, and thereby changing the course of history and the entire population of the Earth.

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