Extraordinary tales


The violinist's thumb
Sam Kean
Doubleday
2012 | 416pp | £20 (HB)
ISBN 9780857520289
Reviewed by Josh Howgego

Each chapter of this weighty hardback is an education in a serious question of genetics. What makes it distinct is that, while tramping through Sam Kean's medley of characters and anecdotes, you enjoy yourself so much that you hardly realise it.

Kean has two skills which make this possible. The first is a capacity for a staggering amount of research; not just into the hard science of genetics, but also the human stories that have helped prompt and delineate the questions in the first place. The second skill is to weave the science together with adventure, history and anecdote to present his material in enthralling narratives.

One story is of Jack, a man who owned 689 domestic cats and endured all that such a life entails. It sounds crazy, but Kean explains that there could be genetic reasons for this kind of bizarre addiction to things which are bad for us. Specifically, a parasitic microorganism nicknamed Toxo might be responsible. It makes its home in the brain (including human ones) and has, at some stage in its evolution, acquired the genetic manufacturing instructions for dopamine, a chemical that activates neural reward circuits. According to Kean about half of humans are infected with Toxo, and there is evidence that it can influence our behaviour by ramping up dopamine production at opportune moments. Scary – but riveting – stuff.

Also agreeable is the fact that each chapter is a self-contained story. And though it would be easily possible to read it from cover to cover (as I did – pretty much), there is a punchline to each chapter, which makes it easy to dip into the book, learning as you go.

Overall this is a book that is expertly written and hugely satisfying as a result.

Purchase The violinist's thumb from Amazon.co.uk.


Related Content

Sand tunes

1 April 2012 Last Retort

news image

Why do large bodies of sand seem to 'sing'?

The last retort

28 March 2012 Premium contentLast Retort

news image

The hills are alive with the sound of sand music!

Most Read

Higher levels of some metals in e-cigarette smoke

8 September 2014 Research

news image

Scientists call for regulators to help clear smoke and mirrors surrounding vaping safety

Isotope effect produces new type of chemical bond

22 October 2014 Research

news image

Evidence emerges for vibrational bond first proposed 30 years ago

Most Commented

Indian U-turn on diabetes drug ban

16 August 2013 News and Analysis

news image

Suspension of cheap and popular medicine reversed but will now come with new safety warnings

DNA waves don't wash

10 July 2013 The Crucible

news image

Philip Ball asks why a spectacular claim seems to have been overlooked. Sometimes science doesn’t work the way it’s suppo...