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  • The Bridge Street Press
  • The Bridge Street Press
  • Hachette Audio
  • The Bridge Street Press

How to Make the World Add Up: Ten Rules for Thinking Differently About Numbers

Tim Harford

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Economic statistics

Using his trademark narrative skills, Tim Harford takes us deep into the world of statistics and shows how important and powerful they can be

'If you aren't in love with stats before reading this book, you will be by the time you're done. Powerful, persuasive, and in these truth-defying times, indispensable'
Caroline Criado Perez, author of Invisible Women
'Fabulously readable, lucid, witty and authoritative . . . Every politician and journalist should be made to read this book, but everyone else will get so much pleasure and draw so much strength from the joyful way it dispels the clouds of deceit and delusion'
Stephen Fry

When was the last time you read a grand statement, accompanied by a large number, and wondered whether it could really be true? Statistics are vital in helping us tell stories - we see them in the papers, on social media, and we hear them used in everyday conversation - and yet we doubt them more than ever.

But numbers - in the right hands - have the power to change the world for the better. Contrary to popular belief, good statistics are not a trick, although they are a kind of magic. Good statistics are not smoke and mirrors; in fact, they help us see more clearly. Good statistics are like a telescope for an astronomer, a microscope for a bacteriologist, or an X-ray for a radiologist. If we are willing to let them, good statistics help us see things about the world around us and about ourselves - both large and small - that we would not be able to see in any other way.

In How to Make the World Add Up, Tim Harford draws on his experience as both an economist and presenter of the BBC's radio show 'More or Less'. He takes us deep into the world of disinformation and obfuscation, bad research and misplaced motivation to find those priceless jewels of data and analysis that make communicating with numbers worthwhile. Harford's characters range from the art forger who conned the Nazis to the stripper who fell in love with the most powerful congressman in Washington, to famous data detectives such as John Maynard Keynes, Daniel Kahneman and Florence Nightingale. He reveals how we can evaluate the claims that surround us with confidence, curiosity and a healthy level of scepticism.

Using ten simple rules for understanding numbers - plus one golden rule - this extraordinarily insightful book shows how if we keep our wits about us, thinking carefully about the way numbers are sourced and presented, we can look around us and see with crystal clarity how the world adds up.

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Tim Harford

Tim Harford is a senior columnist at the Financial Times, and his writing has appeared everywhere from Esquire and Wired to the Washington Post and the New York Times. His previous books include Adapt, The Logic of Life, the million-selling The Undercover Economist, Dear Undercover Economist and The Undercover Economist Strikes Back. Harford is a visiting fellow at Nuffield College, Oxford, was named Economics Commentator of the Year in 2014 and won the Royal Statistical Society Journalistic Excellence Award 2015 and the Society of Business Economists Writing Prize 2014-15. On BBC Radio 4, Harford presents More or Less, which was commended by the Royal Statistical Society for excellence in journalism each year from 2010 to 2014. He has spoken about his ideas at TED and at the Sydney Opera House.

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