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PODCAST

More or Less

Tim Harford explains - and sometimes debunks - the numbers and statistics used in political debate, the news and everyday life

science mathematics

All Episodes

28:04

What's Scottish Independence Worth?

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2014/06/06

Scottish independence - yes or no? Which will line your pocket more? The Scottish government says a Yes vote will leave Scots £1,000 each better off; the UK treasury says a No vote means a £1,400 bonus for Scots. More or Less looks at exactly what these claims mean, the key assumptions underlying them, and asks whether either number is likely to be accurate. Plus: the "zombie" statistic that each year 100,000 Christians are martyred around the world; getting people to agree to make major life

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9:35

WS MoreOrLess: The Piketty Affair

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2014/06/02

Did 'rock-star' French economist Thomas Piketty get his numbers wrong? His theories about rising inequality and the increasing importance of capital have been the talk of the economic and political worlds this year. And part of their power has been the massive amount of data Piketty has brought together to back them. But the Financial Times claims to have found significant problems with Piketty's data on wealth. Tim Harford examines the FT's claims and Thomas Piketty's response. This programme was

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27:56

The Piketty Affair

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2014/05/30

Did 'rock-star' French economist Thomas Piketty get his numbers wrong? His theories about rising inequality and the increasing importance of capital have been the talk of the economic and political worlds this year. And part of their appeal has been the massive amount of data Piketty has brought together to back them. But the Financial Times claims to have found significant problems with Piketty's data on wealth, and says this undermines his claims about rising inequality. Tim Harford examines the

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9:34

WS MoreOrLess: Risk Savvy

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2014/05/26

A famous probability puzzle is discussed involving goats and game shows with German psychologist Gerd Gigerenzer. Is he right to suggest in his new book 'Risk Savvy' that we really don't understand risk and uncertainty? And More or Less listeners weigh in on a problem from last week’s programme - how old will you be before you're guaranteed to celebrate a major, round-number birthday (like 40 or 50) on a weekend?

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28:21

Romanian Crime

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2014/05/23

Are the statistics put forward by UKIP accurate, and are Romanians responsible for more crime than other nationalities? Plus: Gerd Gigerenzer on the famous probability puzzle involving goats and game shows; do 24,000 people die every year from lightning strikes globally; how old will you be before you're guaranteed a round-number birthday on a weekend; and is the divorce rate in the US state of Maine linked to margarine consumption?

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9:34

WS MoreOrLess: Did global poverty halve overnight?

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2014/05/19

Did the number of people around the world living in extreme poverty fall by half a few weeks ago? That's one interpretation of newly released figures for purchasing power parity around the world. The figures compiled by the International Comparison Programme of the World Bank show that in a lot of poorer countries, things are cheaper than we had thought. One development think tank has suggested that if people in these countries can afford to buy more, fewer of them will fall under the World Bank's

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28:16

Tax Dodgers and Benefits Cheats

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2014/05/16

Does the government have lots of people chasing the relatively small amounts lost to benefits cheats, while massive amounts of tax evasion are barely investigated? Plus: did global poverty fall by half a few weeks ago; Eurovision data crunching; Willy Wonka's coveted 'Golden Tickets' and is London the 6th biggest French city?

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9:35

WS MoreOrLess: Brazil’s Maths Superstar

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2014/05/12

The Man Who Counted, a book of 'Arabic' mathematical tales written by Middle Eastern scholar Malba Tahan was published in Brazil in the 1930s. It became a huge success. Malba Tahan's birthday, May 6th, is now celebrated as Brazil's National Day of Mathematics. But the author wasn't who everybody thought he was. Alex Bellos tells his story. This programme was first broadcast on the BBC World Service.

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28:05

Food Bank Britain

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2014/05/09

Food banks are being used by a million people in Britain according to recent newspaper reports. But what do we really know about how many people are using food banks, and does this tell us anything about whether food poverty is increasing? Plus: we remember Gary Becker; Alex Bellos tells the story of Brazil's most famous mathematician; and did a fruit and vegetable seller run the first four minute mile in 1770?

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9:30

Sir Roger Bannister's ‘impossible’ feat

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2014/05/05

Sir Roger Bannister became the first man to run a mile in under four minutes 60 ago. It's one of the most famous records of the 20th Century, one that the passage of time has shrouded in legend. Was the four-minute mile really considered an 'impossible' physical barrier? Are motivational speakers like Anthony Robbins right to claim that the year after it was broken, the power of positive thinking helped dozens of runners to break the four-minute barrier. More or Less speaks with Sir Roger Bannister

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28:24

British Law - Made in Brussels?

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2014/05/02

How much British law is made in Brussels - 75% as UKIP say, or 7% as Nick Clegg says? And how might the ideas of an 18th century minister help find the missing flight MH370?

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9:36

Killed for being female?

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2014/04/26

Are 100 million women missing from the world? A listener asks More or Less to explore this powerful statement - "More girls were killed in the last 50 years, precisely because they were girls, than men killed in all the wars in the 20th century." The quote is from a book called 'Half the Sky' by Nicholas D. Kristof and Sheryl WuDunn. It has been used in articles, by UN agencies and on TV to highlight the fatal consequences of discrimination of women based on their sex. But is it true? More or Less

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9:35

Magic Numbers

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2014/04/19

Do you have a favourite number - one you love, one you think stands out from all the others? Author Alex Bellos joins us to talk about his quest to find the world's favourite number and discuss whether numbers really can be magical, mystical and memorable, or whether it's all mumbo jumbo. Why are odd numbers so appealing? Which number strikes fear into some people's hearts? And why do lists of questions like these always come in threes? This programme was first broadcast on the BBC World

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9:34

Nigeria - rich or poor?

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2014/04/12

Nigeria's bureau of statistics has overhauled the way it calculates the country's GDP figures. With GDP now estimated at around $510 billion, it has surpassed South Africa as the continent's largest economy. But just because it has earned this accolade â€“ does that make it one of the richest? Plus was the President of the World Bank, Jim Yong Kim, right to say recently that Nigeria is one of just five countries that together are home to two-thirds of the worldâ€™s extreme poor? We sift through the

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9:36

Freedom in Numbers

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2014/04/05

How many people in the world live in freedom? The BBC's Freedom 2014 season got Tim Harford and the More or Less team wondering about this. It's actually pretty hard to put a number on freedom, so Tim begins by looking at something more quantifiable: how many people live in a democracy? And are people in democracies happier? Tim Harford looks at the numbers with Simon Baptist from the Economist Intelligence Unit. Plus, he examines the price of a cup of coffee, and whether Ruth Alexander can be

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9:33

Is London France’s sixth largest city?

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2014/03/29

Are there really be 300,000 French people in London and would they really want to leave France for the UK anyway? The Mayor of London, British journalists and commentators have trotted out this "fact" a number of times over the last few years to illustrate just how popular the UK’s capital is with its neighbours across the Channel. It appears that Nicolas Sarkozy may have said it as far back as 2008. Wesley Stephenson and Charlotte McDonald brush off their best French to find out the truth. This

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9:34

Missing planes

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2014/03/22

Could Bayesian statistics find Flight MH370 from Kuala Lumpur to Beijing? This niche form of statistical modelling has been used to find everything from submarines to missing people. More or Less explores how it was used to locate the wreckage of Air France flight 447 from Brazil to France which disappeared in 2009. This programme was first broadcast on the BBC World Service.

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9:35

Mailbox edition

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2014/03/15

Your questions answered - Do the Maasai in Africa number one million? Is it true that a quarter of Americans do not know the Earth goes round the sun? Are half of Tasmanians innumerate and illiterate? Plus, Do the 85 richest people in the world hold the same amount of wealth as the poorest half? This programme was first broadcast on the BBC World Service.

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9:34

WS MoreOrLess: Modern Slavery

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2014/03/08

Are there 21 million slaves in the world today? Director of 12 Years a Slave, Steve McQueen, made this claim at both the Oscars and the BAFTAs while accepting awards. More or Less looks into the definition of a slave, where they can be found, and explores how they can be counted. This programme was first broadcast on the BBC World Service.

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9:34

The 10,000 hours rule

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2014/03/01

Becoming a pro on practice alone – is that possible? Or do you need innate talent? After reading books promoting the idea, a photographer with no natural talent explains how he is practising for 10,000, hours to become a professional golfer. We hear David Epstein, author of 'The Sports Gene', and Malcolm Gladwell, author of 'Outliers' explain their views on whether you need innate ability. This programme was first broadcast on the BBC World Service.

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