Cooking is the root of all evil

If we hadn’t learned to roast meat, many of society's ills would never have happened.

The evil that chefs do lives after them. Until his death on 24 June, the Galapagos turtle known as Lonesome George was the rarest creature in the world, his forebears hunted to oblivion by hungry sailors.
 
Then there is the deadening legacy of the Rio+20 summit – an “epic failure”, as Greenpeace put it. We might not be eating rare species to the brink of extinction any longer but, as a result of our activities, climate change will drive many species to their doom. And it is clear that the chefs are to blame for this, too.
 
To see why, we have to take a closer look at the human brain. In order to harness resources that ensure our survival, human beings have learned a range of skills that makes us uniquely dangerous. We learned how to domesticate animals, tame wild land for agriculture, build cities and design and construct machines for rapid travel over vast distances.
 
It takes extraordinary cognitive abilities to pull all this off. Which makes it all the more remarkable that the human brain is not particularly unusual. An analysis published in the 25 June edition of the Proceedings of the National Academy of Sciences of the United States of America shows that a human being’s brain is just a scaled-up version of the generic primate brain.
 
The human brain has about 85 billion of the glial cells that provide a scaffold for the information-processing neuron cells – of which there are roughly 86 billion. This is the same ratio of processing cells to support cells as found in other primate brains. The common report of ten (sometimes 50) times as many neurons as support cells is false.
 
Then there is the claim that the human cerebral cortex, the outer covering of grey matter, is particularly rich in neurons. It is not: the ratio of normal, cerebellar neurons to cortical neurons is the same in human beings as in every other mammal, adjusting for how the density of neurons varies with brain size. 
 
Brain size does differ wildly across nature. But many creatures have large brains only because they have large neurons; a tenfold increase in the number of neurons in a rodent cortex results in a fiftyfold increase in brain size. Primates, on the other hand, pack small neurons: ten times as many neurons give a brain only ten times bigger.
 
Basically, our advanced cognitive abilities arose because we have packed the largest number of neurons into one network. Our brain size seems to have crossed a threshold, a tipping point that switches on the kind of innovative thinking that launches technological development on a scale that can change a planet.
 

Meat is murder

 
The thing is that those extra neurons use up a lot of calories, calories to which the great apes can’t get access. Neither could the earliest human beings. But somewhere in early human evolution, we managed to find the extra few hundred kilocalories a day necessary for our brain expansion. How did we do it? By harnessing fire. Put simply, cooked food yields much more energy than raw.
 
So, it was the first chefs who created the modern human – and all the devastation its brain has unleashed. The cooking of Galapagos turtles was only the final act of the chefs; without the first of their kind, Lonesome George would not have been lonesome at all. If we hadn’t learned to cook, we would never have been able to come up with the means of global travel, prompting us to look for food in far-off places.
 
Without roasted meat, there would have been no Industrial Revolution, no devastation of swaths of Planet Earth’s animal and plant species, no catastrophic climate change. The politicians are off the hook – bring me the head of Jamie Oliver. 
 
Michael Brooks’s “Free Radicals: the Secret Anarchy of Science” is published by Profile Books (£12.99)
 
From global warming to extinction: modern problems come down to meat. Photograph: Getty Images

Michael Brooks holds a PhD in quantum physics. He writes a weekly science column for the New Statesman, and his most recent book is At the Edge of Uncertainty: 11 Discoveries Taking Science by Surprise.

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Don’t worry, Old Etonian Damian Lewis calls claims of privilege in acting “nonsense!”

The actor says over-representation of the privately educated at the top of acting is nothing to worry about – and his many, many privately educated peers agree.

In the last few years, fears have grown over the lack of working class British actors. “People like me wouldn’t have been able to go to college today,” said Dame Julie Walters. “I could because I got a full grant. I don’t know how you get into it now.”

Last year, a report revealed that half of Britain’s most successful actors were privately educated. The Sutton Trust found that 42 per cent of Bafta winners over all time were educated independently. 67 per cent of British winners in the best leading actor, actress and director categories at the Oscars attended fee-paying schools – and just seven per cent of British Oscar winners were state educated.

“That’s a frightening world to live in,” said James McAvoy, “because as soon as you get one tiny pocket of society creating all the arts, or culture starts to become representative not of everybody but of one tiny part. That’s not fair to begin with, but it’s also damaging for society.”

But have no fear! Old Etonian Damian Lewis is here to reassure us. Comfortingly, the privately-educated successful actor sees no problem with the proliferation of privately-educated successful actors. Speaking to the Evening Standard in February, he said that one thing that really makes him angry is “the flaring up recently of this idea that it was unfair that people from private schools were getting acting jobs.” Such concerns are, simply, “a nonsense!”

He elaborated in April, during a Guardian web chat. "As an actor educated at Eton, I'm still always in a minority," he wrote. "What is true and always rewarding about the acting profession is that everyone has a similar story about them being in a minority."

Lewis’s fellow alumni actors include Hugh Laurie, Tom Hiddleston, Eddie Redmayne – a happy coincidence, then, and nothing to do with the fact that Etonians have drama facilities including a designer, carpenter, manager, and wardrobe mistress. It is equally serendipitous that Laurie, Hiddleston and Tom Hollander – all stars of last year’s The Night Manager – attended the same posh prep school, The Dragon School in Oxford, alongside Emma Watson, Jack Davenport, Hugh Dancy, Dom Joly and Jack Whitehall. “Old Dragons (ODs) are absolutely everywhere,” said one former pupil, “and there’s a great sense of ‘looking after our own’." Tom Hollander said the Dragon School, which has a focus on creativity, is the reason for his love of acting, but that’s neither here nor there.

Damian Lewis’s wife, fellow actor Helen McCrory, first studied at her local state school before switching to the independent boarding school Queenswood Girls’ School in Hertfordshire (“I’m just as happy to eat foie gras as a baked potato,” the Telegraph quote her as saying on the subject). But she says she didn’t develop an interest in acting until she moved schools, thanks to her drama teacher, former actor Thane Bettany (father of Paul). Of course, private school has had literally no impact on her career either.

In fact, it could have had an adverse affect – as Benedict Cumberbatch’s old drama teacher at Harrow, Martin Tyrell, has explained: “I feel that [Cumberbatch and co] are being limited [from playing certain parts] by critics and audiences as a result of what their parents did for them at the age of 13. And that seems to me very unfair.”

He added: “I don’t think anyone ever bought an education at Harrow in order for their son to become an actor. Going to a major independent school is of no importance or value or help at all.” That clears that up.

The words of Michael Gambon should also put fears to rest. “The more Old Etonians the better, I think!” he said. “The two or three who are playing at the moment are geniuses, aren’t they? The more geniuses you get, the better. It’s to do with being actors and wanting to do it; it’s nothing to do with where they come from.”

So we should rejoice, and not feel worried when we read a list of privately educated Bafta and Oscar winners as long as this: Chiwetel Ejiofor (Dulwich College), Emilia Clarke (St Edward’s), Carey Mulligan (Woldingham School), Kate Winslet (Redroofs Theatre School), Daniel Day-Lewis (Sevenoaks School, Bedales), Jeremy Irons (Sherborne School), Rosamund Pike (Badminton), Tom Hardy (Reed), Kate Beckinsale (Godolphin and Latymer), Matthew Goode (Exeter), Rebecca Hall (Roedean), Emily Blunt (Hurtwood House) and Dan Stevens (Tonbridge).

Life is a meritocracy, and these guys were simply always the best. I guess the working classes just aren’t as talented.

Anna Leszkiewicz is a pop culture writer at the New Statesman.

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