"In science, you've got to go against what the elders are saying"

The string theorist Brian Greene has grown from maths prodigy to physics iconoclast. Now he hopes to

As a child, Brian Greene interpreted the story of Icarus differently to most people. "In my naivety, I thought that it was a story about a boy who was bucking authority, not doing what his father said and yet he was paying the ultimate price," he says. "As I got older and became a scientist, it seemed more off-base, because in order to have great breakthroughs in science, you've got to go against what the elders are saying."

Greene has spent his career as a physics professor doing exactly that, exploring the wild frontiers of superstring theory: an unproven, untested and possibly untestable outcrop of theoretical physics. It's an attempt to resolve a conundrum: that we have working explanations of the universe on a grand scale (Einstein's general relativity) and the subatomic scale (quantum mechanics) but no one can reconcile the two. String theory tries to provide a "theory of everything" by suggesting that all matter is, at its smallest level, made of one-dimensional, vibrating loops, whose oscillation patterns determine their mass and "flavour".

For more than a decade, this 48-year-old vegan has been its most compelling advocate. As he wrote in 1999, "String theory has the potential to show that all of the wondrous happenings in the universe -- from the frantic dance of subatomic quarks to the stately waltz of orbiting binary stars; from the primordial fireball of the big bang to the majestic swirl of heavenly galaxies -- are reflections of one, grand physical principle, one master equation."

Greene now lives in upstate New York but he was born in what was, in 1963, a rough district of Manhattan. His father, Alan, a high-school drop-out who became a professional musician and composer, spotted his son's precocious mathematical ability when he was just five and set him to work multiplying 30-digit numbers on huge sheets of construction paper. When that began to pall, he asked the young Brian to calculate the number of inches between the earth and the Andromeda galaxy. "That is a very straightforward calculation," he tells me now, sitting in the tea room of a London hotel, "because people know how far away it is in light years. Then you need to convert light years into miles, miles into feet and feet into inches."

His mother has always been less impressed by what he does. "My mom says: 'Why aren't you a doctor?' and I'm like, 'I am a doctor!' and she's all, 'No, I mean a real doctor.' She reads my books but she says they give her a headache."

His run-down school ran out of things to teach him when he was 11, so one of the staff sent him knocking on the doors of the graduate students at Columbia University, bearing a note: "Take this kid on, he's hungry to learn." Thankfully, one of them did. "For no money," he points out. "Because we didn't have any money. He just did this for the love of learning."

Time travel

It is fitting that Greene is now a professor at Columbia and co-director of its Institute for Strings, Cosmology and Astroparticle Physics. Every few years, he gives what he calls a "report from the trenches" of cutting-edge theoretical physics. In 1999, he wrote an introduction to the subject, The Elegant Universe, followed in 2004 by a book on space-time and the nature of reality. This year, it's parallel universes.

His latest book, The Hidden Reality, suggests that our universe could be one of many, "like slices of bread in a cosmic loaf" or "one expanding bubble in a grand, cosmic bubble bath". He explains the idea of a literal "fabric" of space-time by telling me that a spinning black hole exerts a drag on the space around it, "like a pebble in a vat of molasses -- as the pebble spins, the molasses spins with it". His relaxed, metaphorical prose style has got him into trouble before. One reviewer complained that he "indulge[d] in a pandering sort of lyricism", but of greater concern to Greene were those who read his clear explanations and then turned up at his graduate class expecting to understand the content. One man spent ten years in his basement trying to take his first book's ideas to the next level. "He wrote how his wife almost left him because he wouldn't come out of the basement," Greene tells me. "It was heartbreaking."

Asked to name his scientific hero, he picks Albert Einstein, along with Edward Witten, a Princeton physicist. At the start of the 20th century, Einstein overturned the principles of physics by rejecting Isaac Newton's theory of gravity because it conflicted with his discovery that nothing travels faster than the speed of light. "So many of us," Greene says, "revere [Einstein] but it needs to be said -- because I've seen it reported in an odd way -- that we don't revere Einstein like some gurus of New Age cults may be revered, or some religious leaders. We are constantly critical of everyone's contributions, even Witten's. We look at a given paper, we bang it around, knock it, try to break it."

The same goes for string theory, which could turn out to be completely wrong. "It's a highly speculative subject but I don't shrink from that," he says. "If you ask me: 'Do I believe in string theory?' The answer is: no, I don't. I don't believe anything until it is experimentally proven [and] observationally confirmed."

How would he feel if it turned out to be a blind alley? His answer is surprising. "I would be thrilled." He explains: "I don't mean that in an off-handed way. My emotional investment is in finding truth. If string theory is wrong, I'd like to have known that yesterday. But if we can show it today or tomorrow, fantastic . . . It would allow us to focus our attention on approaches that have a better chance of revealing truth."

This isn't a discipline for the faint-hearted. When Greene was studying for his PhD at Oxford in the 1980s, he was tackling one of the fundamental ideas required to make the maths of string theory work: that there are more than three spatial dimensions. "Our eyes only see the big dimensions but beyond those there are others that escape detection because they are so small," he says. "Yet the exact shape of the extra dimensions has a profound effect on things that we can see, like what the electron weighs, its mass, the strength of gravity."

When he began his doctoral research, there were five possible shapes, one of which he ruled out by mathematical analysis. "The problem was, when I turned back to the list of shapes to look at the second, the list had grown. It was 100. Then 1,000, then 10,000. Ten thousand is still potentially doable -- it would keep an army of graduate students busy for a while -- but, nowadays, it has reached ten to the power of 500, which is an unimaginably huge number; the number of the particles in the observable universe is about ten to the power of 80."

Faced with this abundance, some physicists have decided to abandon the search, while others (including Greene) are trying to find equations to narrow down the field. A third group has a more radical proposal. "Those physicists have said we should take seriously the failure to pick out one shape from the many, because maybe that's telling us there is no unique shape. Maybe the maths is telling us that there are many universes and in each universe one of those shapes is in the limelight."

Mind the gap

Physicists can be an iconoclastic bunch but is there not a danger that their conviction gives fuel to the climate sceptics and creationists who say that science is a belief system, too? "Science is a self-correcting discipline that can, in subsequent generations, show that previous ideas were not correct," Greene counters. "When it comes to climate change . . . [and] the preponderance of data is pointing in a given direction, your confidence needs to rise proportionate to that. The data is very convincing."

He also has trenchant views about religious belief. "My view is that science only has something to say about a very particular notion of God, which goes by the name of 'god of the gaps'. If science hasn't given an explanation for some phenomenon, you could step back and say, 'Oh, that's God.' Then, when science does explain that phenomenon -- as it eventually does -- God gets squeezed out. I think the appropriate response for a physicist is: 'I do not find the concept of God very interesting, because I cannot test it.'"

Before I leave, I raise the idea of the "infinite multiverse", where every possible outcome of an event spins off a different universe. Dropped your piece of toast, buttered side down? There's now a universe where the opposite happened and you didn't have to scrape the fluff off your breakfast. It's one way of dealing with the fact that although a given outcome might have 30 per cent probability, and another might have 70 per cent, nowhere in the laws of physics is there a reason why one happens and not the other.

Doesn't that render the idea of free will redundant? "Yes," he says baldly. "We do not see free will in the equations: you and I are just particles governed by particular laws. Every individual, faced with five choices, would make all five -- one per universe. And all of the choices would be as real as the others." Don't we deserve credit for picking the choice that keeps us in this universe? Greene shakes his head. "Not really, because you are following one trajectory of choices. It is not as though there was a place in the mathematics where your free will dictated that particular set of choices. You are knocked around by the laws of physics, just like all your copies in the other universes."

I look at the preppy professor sitting opposite me drinking a cup of chai and wonder if there is a Brian Greene in another universe who was turned away by every grad student he asked for help. "And joined some gang and just been a street thug?" he says, smiling. "It is possible."

Brian Greene's "The Hidden Reality" is published by Allen Lane (£25)

Helen Lewis-Hasteley is an assistant editor of the New Statesman

Helen Lewis is deputy editor of the New Statesman. She has presented BBC Radio 4’s Week in Westminster and is a regular panellist on BBC1’s Sunday Politics.

This article first appeared in the 06 June 2011 issue of the New Statesman, Are we all doomed?

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Britain's diversity crisis starts with its writers. Here's why

What happens on the casting couch draws the headline, but the problem starts on the page, says James Graham. 

I’m a playwright and screenwriter, which – pertinent to the issues we’ll be discussing in this enquiry – still feels weird to say. I get embarrassed, still, saying that, in a taxi or hairdressers. I don’t know why I still carry that insecurity about saying I’m a writer, but I do, because it sounds like I’m lying, even in my own head.

Obviously I’m completely biased, and probably overstating the influence and importance of my own profession, but I think so many of the problems surrounding lack of representation in the performing arts start with writers.

If we aren’t encouraging and generating writers from certain communities, classes or backgrounds to tell their stories, to write those roles, then there’s not going to be a demand for actors from those communities to play them. For casting agents or drama schools to prioritise getting diverse actors on stage. We need to create those plays and TV dramas –like the ones that I grew up with. I didn’t have any access to much theatre until I was fifteen, but I did have Boys From the Black Stuff, and I did have Cracker, and I did have Band of Gold. I think the loss of those regional producing bodies – Central, Granada – now all completely centralised into London, means that we just tell less of those stories. I remember a TV show called Boon – anyone? – which was set in Nottingham, and I would see on the TV streets I’d walked down, and think, Oh my God, that actor is walking down a street I’ve walked down. That sounds like it’s insignificant. If you’re from a town that is deprived, that feels ignored, it isn’t.

I was very lucky that at my school (which was, at the time, the largest comprehensive school in the country), from the headmaster down to the drama teachers, everyone just believed that working class kids should do plays. Be in plays, read plays, perform plays to the community. Both inside the curriculum of the school day, and outside it – drama teachers dedicating their time to staying behind. Our head of drama identified a group of us who clearly had a passion for it. We weren’t likely thesps. One lad’s entire family were made unemployed when the pit closed. Many lived on the big council estate. My parents and step-parents worked respectively in warehouses, the local council, or as the local window cleaner (incidentally, my first real job. Which I was terrible at).

Our drama teacher was encouraged and determined enough to launch the first ever Drama A-Level in our school. Based on that, about 10 or 12 of us got the confidence – or arrogance – to take our own show to the Edinburgh Festival. We were 16 or 17, and the first people in our community to ever go to visit the festival. We did a play up there, and after that, a psychological unlocking happened, where I thought: maybe I could do a degree in drama (it was the first time I had ever thought to do so) at university (the first in my family to go. Well, joint-first. My twin sister went on the same day, but I walked into my digs first).

I enrolled in drama at Hull University. A high proportion of my peers were middle class. A higher proportion from London or the South East. They talked often about institutions I had never heard of. They were talking about the National Theatre: I didn’t know we had a national theatre that my parents had been paying tax for that I had never been to. Many had performed with the (again, apparently) ‘National’ Youth Theatre, also in London. Paul Roseby, also on this panel, has made such leaps forward in getting the NYT producing in regional venues, and making auditions possible for people across the UK, but unfortunately, at the time, that wasn’t the case for me – and I was the ideal candidate to be in the National Youth Theatre.

I started writing because I had the confidence after I read texts by people like Jim Cartwright, Alan Bennett, John Godber, Alan Ayckbourn: Northern writers, working class writers that made me think it wasn’t just something that other people do.

After returning home, and working at local theatres, I moved down to London. I had to. The major new writing producers are there. All the TV companies are there. The agents are there. I was lucky to find support in a pub fringe theatre – though the economics meant there was no money to commission, so I wrote plays for free for about four years, that would get produced, and reviewed in the national press, while I worked various jobs in the day and slept for a time on a mate's floor. The first person to ever pay to commission me to write a play was Paul Roseby of the National Youth Theatre. I’m now very lucky to be earning a living doing something I love. In a way, compared to actors, or directors, it’s easier for writers who don’t come from a background that can sustain them, financially, in those early years. Your hours can be more flexible. Yes, it was annoying to miss rehearsals because I had a shift in a call centre, but it was still possible to do it. If you’re an actor or director, you’re fully committed. And if you’re doing that for nothing, there starts to be cut-off point for those from backgrounds who can’t.

I’m sure that local and regional theatres are the key to drawing in talent from less privileged backgrounds. But the range of national arts journalism that cover work outside London has been so significantly reduced. In our little echo chamber a few weeks ago, we theatre types talked about Lyn Gardner at the Guardian. Her coverage has been cut, which is very directly going to affect her ability to cover theatre shows outside of London – and so the self-fulfilling cycle of artists leaving their communities to work exclusively in London takes another, inevitable, turn.

I am culpable in this cycle. I have never done a play at the Nottingham Playhouse, my local producing house growing up – why? Because I’ve never submitted one, because I know that it will get less national press attention. So I just open it in London instead. That’s terrible of me. And I should just bite the bullet and say it doesn’t matter about the attention it gets, I should just go and do a story for my community. And if I, and others, started doing that more, maybe they will come.

I also want to blame myself for not contributing back to the state schools that I come from. I really really enjoy going to do writing workshops with kids in schools, but I would say 90 per cent of those that I get invited to are private schools, or boarding schools, or in the South of England. Either because they’re the ones that ask me, because they’re the ones who come and see my shows in London and see me afterwards backstage, or because they have the confidence to email my agent, or they have the budget to pay for my train ticket. Either way, I should do more. It would have helped the younger me so much to meet a real person, from my background, doing what I wanted to do.

I don’t know how to facilitate that. I take inspiration from Act for Change, creating a grassroots organisation. I know that there is a wealth of industry professionals like me who would, if there was a joined-up structure in place that got us out there into less privileged communities, we would on a regular basis go to schools who don’t get to meet industry professionals and don’t unlock that cultural and psychological block that working class kids have that says, that is not for me, that is something that other people do, I would dedicate so much of my time to it. That’s just one idea of hopefully better ones from other people that might come out of this enquiry.

James Graham is a playwright and screenwriter. This piece is adapted from evidence given by James Graham at an inquiry, Acting Up – Breaking the Class Ceiling in the Performing Arts, looking into the problem of a lack of diversity and a class divide in acting in the UK, led by MPs Gloria De Piero and Tracy Brabin.