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You can hear the change in what prominent would-be centrists are saying. In the 1990s, when neoliberalism was the centre, the line was: we must slash middle-class entitlements in order to be more competitive in the global free market. Now the line is: in order to save free-market globalism from populists preying on middle-class economic anxieties, we must expand the middle-class welfare state.The winners – at least for now – are welfare state liberals such as old-fashioned New Dealers in the US and their equivalents in other countries. The position of the original “third way” of 1932-68 always made sense. Middle-class social insurance programmes, by guaranteeing economic security, reduce the appeal of populism, socialism and other kinds of ­radical statism, and make possible broad political support for open and competitive national and global markets. You will hear much more of this line as politicians rush to occupy the new centre in the years ahead.

True, liberalism everywhere gestures towards the supposed horrors of an alternative political order in order to justify itself, but in the west these days it usually does so with power on its side. Muslim liberals, on the other hand, not only possess little power in their own right, they have also been unable thus far to stage the spectacular acts of sacrifice that mobilise people for a cause - acts of the kind that militants are so adept at performing. These sacrificial acts need not even be violent to be effective, as Gandhi and after him Martin Luther King and Nelson Mandela demonstrated so well through the entire course of the 20th century. Perhaps liberals are incapable of staging such spectacles, given their devotion to protecting interests rather than sacrificing them, which is why liberalism has always come to power on the back of far more radical movements dedicated to religion, revolution or revenge.

The crucial test is whether one’s pet theory can distinguish between selection for trait A and selection for trait B when A and B are coextensive: were polar bears selected for being white or for matching their environment? Search me; and search any kind of adaptationism I’ve heard of. Nor am I holding my breath till one comes along.

Lacking arches, domes fall down; so arches are selected for supporting domes. But arches are linked to spandrels for reasons of geometry; so spandrels aren’t selected for, they are ‘free riders’ on selection for arches. The moral is that phenotypic traits can carry information about linkages among the mechanisms that produce them. Free-riding is always suggestive of such linkages, and free-riding is ubiquitous in evolution.

When you ask Darwin’s question – why are phenotypes often similar? – you do indeed get Darwin’s answer. But if you ask instead why it is that some phenotypes don’t occur, an adaptationist explanation often sounds somewhere between implausible and preposterous. For example, nobody, not even the most ravening of adaptationists, would seek to explain the absence of winged pigs by claiming that, though there used to be some, the wings proved to be a liability so nature selected against them. Nobody expects to find fossils of a species of winged pig that has now gone extinct. Rather, pigs lack wings because there’s no place on pigs to put them. To add wings to a pig, you’d also have to tinker with lots of other things. In fact, you’d have to rebuild the pig whole hog: less weight, appropriate musculature, an appropriate metabolism, an apparatus for navigating in three dimensions, a streamlined silhouette and god only knows what else; not to mention feathers. The moral is that if you want them to have wings, you will have to redesign pigs radically. But natural selection, since it is incremental and cumulative, can’t do that sort of thing. Evolution by natural selection is inherently a conservative process, and once you’re well along the evolutionary route to being a pig, your further options are considerably constrained; you can’t, for example, go back and retrofit feathers.

And let me say that commitment to international action on justice means today to prevent genocide, the world must through the U.N, urgently act in Darfur.

Most of all my parents taught me that each of us should live by a moral compass.It was a simple faith with a fundamental optimism.That each and every one of us has a talent.Each of us a duty to use that talent.And each of us should have the chance to develop that talent. And my parents thought we should use whatever talent we had to help people least able to help themselves. And as I grew up surrounded by books, sports, music and encouragement, I saw at school and beyond how some flourished and others, denied these opportunities, fell behind. They had talent, they had ability. But they did not have the chance to fulfil their promise. They needed someone to champion them. They needed the support of people on their side. And is not our history the story of yes, progress through the fulfilled talents, even genius, of some but, yes, also of the wasted potential of millions for too many, their talents lost and forever unfulfilled?

Strip away the rhetoric about globalisation and it comes down to one essential truth: You can buy raw materials from anywhere,You can borrow capital form anywhere,You can engage with technology half way across the world,But you cannot buy from elsewhere what in the global economy you need most; the skills and the creativity of all our people – and that means that in education we must aim to be number one.