Yet scientists are required to back up their claims not with private feelings but with publicly checkable evidence. Their experiments must have rigorous controls to eliminate spurious effects. And statistical analysis eliminates the suspicion (or at least measures the likelihood) that the apparent effect might have happened by chance alone. Paranormal phenomena have a habit of going away whenever they are tested under rigorous conditions. This is why the £740,000 reward of James Randi, offered to anyone who can demonstrate a paranormal effect under proper scientific controls, is safe. Why don't the television editors insist on some equivalently rigorous test? Could it be that they believe the alleged paranormal powers would evaporate and bang go the ratings? Consider this. If a paranormalist could really give an unequivocal demonstration of telepathy (precognition, psychokinesis, reincarnation, whatever it is), he would be the discoverer of a totally new principle unknown to physical science. The discoverer of the new energy field that links mind to mind in telepathy, or of the new fundamental force that moves objects around a table top, deserves a Nobel prize and would probably get one. If you are in possession of this revolutionary secret of science, why not prove it and be hailed as the new Newton? Of course, we know the answer. You can't do it. You are a fake. Yet the final indictment against the television decision-makers is more profound and more serious. Their recent splurge of paranormalism debauches true science and undermines the efforts of their own excellent science departments. The universe is a strange and wondrous place. The truth is quite odd enough to need no help from pseudo-scientific charlatans. The public appetite for wonder can be fed, through the powerful medium of television, without compromising the principles of honesty and reason.

You see, if you say something positive like the whole of life – all living things – is descended from a single common ancestor which lived about 4,000 million years ago and that we are all cousins, well that is an exceedingly important and true thing to say and that is what I want to say. Somebody who is religious sees that as threatening and so I am represented as attacking religion, and I am forced into responding to their reaction. But you do not have to see my main purpose as attacking religion. Certainly I see the scientific view of the world as incompatible with religion, but that is not what is interesting about it. It is also incompatible with magic, but that also is not worth stressing. What is interesting about the scientific world view is that it is true, inspiring, remarkable and that it unites a whole lot of phenomena under a single heading. And that is what is so exciting for me.

So to the book's provocation, the statement that nearly half the people in the United States don't believe in evolution. Not just any people but powerful people, people who should know better, people with too much influence over educational policy. We are not talking about Darwin's particular theory of natural selection. It is still (just) possible for a biologist to doubt its importance, and a few claim to. No, we are here talking about the fact of evolution itself, a fact that is proved utterly beyond reasonable doubt. To claim equal time for creation science in biology classes is about as sensible as to claim equal time for the flat-earth theory in astronomy classes. Or, as someone has pointed out, you might as well claim equal time in sex education classes for the stork theory. It is absolutely safe to say that if you meet somebody who claims not to believe in evolution, that person is ignorant, stupid or insane (or wicked, but I'd rather not consider that). If that gives you offence, I'm sorry. You are probably not stupid, insane or wicked; and ignorance is no crime in a country with strong local traditions of interference in the freedom of biology educators to teach the central theorem of their subject.

Just because science can't in practice explain things like the love that motivates a poet to write a sonnet, that doesn't mean that religion can. It's a simple and logical fallacy to say, 'If science can't do something, therefore religion can'.