The Believing Brain: how we construct beliefs and reinforce them as truths by Michael Shermer. Times books, New York. 386pp. ISBN 978-0-8050-9125-0. Reviewed by Martin Wallace.

Aa a member of NZ Skeptics I have become increasingly aware of the huge and ever-growing list of unsubstantiated beliefs in our society, including religion, alternative medicine, alien abductions, ESP, flying saucers, vaccination refusal, and so on and on. Why are there so many of them and their adherents, and so few of us skeptics?

In his new book Michael Shermer sets out the reasons for this situation. It is our believing brains, evolved hundreds of thousands of years ago, that are responsible. Belief without evidence is a salutary behaviour when facing a trembling bush behind which a predator may be lurking. Don’t wait for evidence – just go! Survival is selected for by belief.

Michael Shermer is the founding publisher of Skeptic magazine in the US, writes a regular column in Scientific American, and is an adjunct professor at Claremont Graduate University. He lives in Calfornia.

In this book he explores beliefs in many fields, and how we select data after forming the beliefs, to reinforce them. He describes how deeply inherent is our desire to detect patterns in our sensory information, and the evidence from neurophysiology and behavioural genetics which shows how and where this occurs. Religion for example exists in all cultures and can be called “a universal”.

Dr Shermer explores the history of empiricism and the extraordinary prescience of Francis Bacon (c 1620) in his recognition of those human behaviours which inhibit the determination of reality, and the need for a new approach.

He makes a strong argument for the teaching of scientific method in our schools as well as teaching the nature of the world revealed by that process. It is the unwillingness to apply that method which has resulted in the perseverance of our plethora of beliefs. We are not endowed by evolution with that aptitude, which after all is only 400 years old. We have to learn it.

Unsubstantiated beliefs have been part of our nature for a million years. This is why there are so many of them, and why they are so widespread. Shermer writes: “Science is the only hope we have of avoiding the trap of belief-dependant realism. It is the best tool ever devised to determine: does belief equate with reality?”

The prologue is available on Shermer’s web page ( and gives some idea of what lies within. There are liberal notes for each chapter and a comprehensive index.

I would recommend this book to anyone, sceptic or not, who wishes to better understand our human nature.

Martin Wallace is a retired physician who is resuming his education in literature, natural history, and in trying to understand human behaviour.

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