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BBC Radio 4

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

More or Less: Behind the Stats

For months, the share prices of tech companies have marched seemingly-ever upward, driven by fevered excitement about the potential of Artificial Intelligence. But many are now voicing fears that this surge might turn out to be a bubble, which could burst with damaging effects.

So do we have to rely on vibes? Or can we use data to tell us about the risk that AI might go pop?

Nathan Gower discovers what the numbers tell us about the health of the stock market.

Guests:
Katie Martin, markets columnist at the Financial Times
Simon French, Chief Economist and Head of Research at investment company Panmure Liberum

Presenter and Producer: Nathan Gower
Series Producer: Tom Colls
Editor: Richard Vadon 
Sound Engineer: Andy Mills

Is there a stock market crash coming?

Bernie Sanders says a vast amount of wealth - $50 trillion - has moved from 90% of the population to the wealthiest Americans since the 1970s. 
The figure comes from a study by Carter Price, a senior mathematician at nonprofit research institute the RAND Corporation.

Tim Harford speaks to Carter to understand how he calculated his figures and what they really mean.

If you’ve seen a number in the news you think we should take a look at, email moreorless@bbc.co.uk 

Presenter: Tim Harford
Producer: Nicolas Barrett
Series producer: Tom Colls
Sound mix: Giles Aspen
Editor: Richard Vadon

Has there been a $50 trillion wealth transfer to the richest Americans?

The US Health Secretary Robert F. Kennedy Jr is on a mission to make America healthy again.
 
One of his health-promotion ideas is to reduce chronic illness, specifically diabetes. And has part of his campaign he said that: 
 
"a typical pediatrician would see one case of diabetes in his lifetime, over a 40 or 50 year career. Today, 1 out of every 3 kids who walks through his office door is prediabetic or diabetic. Twenty years ago, there was no diabetes in China, today 50% of the population is diabetic' 
 
Diabetes does carry a huge burden of health, but are his numbers right and how much of a problem is diabetes in the US and around the globe?
 
We speak to diabetes expert and co-author of the Diabetes Atlas, Professor Dianna Magliano to find out more. 
 
Presenter: Tim Harford
Producer: Lizzy McNeill
Series Producer: Tom Colls
Studio Manager: Rod Farquhar
Editor: Richard Vadon

Is RFK Jr right about China's diabetes rate?

Vlad III Dracula, the Wallachian Prince who became Bram Stokers inspiration behind his famous vampire 'Count Dracula,' was a brutal ruler. So brutal that history dubbed him 'Vlad the Impaler' due to his penchant for that particularly gruesome form of execution. Which, without going into too much detail, involved driving a large stake or pole through someone's body - often vertically. 

Chroniclers and historians claim that he impaled over 20,000 people during his reigns which, if true is a very, very big number. But is it true? We speak to Historian Dénes Harai whose paper: 'Counting the Stakes: A Reassessment of Vlad III Dracula’s Practice of Collective Impalements in Fifteenth-Century South-eastern Europe' attempts to set the record straight. 

Let's travel back to 1431 to separate the math's from the myth. 

Presenter/Producer: Lizzy McNeill 
Series Producer: Tom Colls 
Sound Mix: Neil Churchill 
Editor: Richard Vadon

Halloween special: How many people did the real Dracula impale?

Do you ever have fights with your partner about who does more of the housework and whether it’s fair? Well data might have the answer. 

Corinne Low is an associate professor at the Wharton School at the University of Pennsylvania. She analyses surveys of how people spend their time, particularly in terms of “home production” - that is things like cooking and cleaning, and “market work”, that is, paid work. 

If you’re the male half of a heterosexual couple, then she’s got some stats you should hear.

Tim sat down to talk it all over while Corinne was in the UK to promote her new book on the subject - titled Femonomics in the UK, and Having It All in the US.

Presenter: Tim Harford
Series producer: Tom Colls
Production co-ordinator: Janet Staples
Sound mix: Giles Aspen
Editor: Richard Vadon

Is your housework split sexist?

Joel Mokyr, Philippe Aghion and Peter Howitt have been awarded this year’s Nobel Memorial Prize in Economic Sciences.

The three are sharing 11 million Swedish kronor, over a million dollars, after being recognised for their work in the area of “innovation-driven economic growth”. But why does this area matter and what did the three economists actually do? 
We turn the tables on our presenter Tim Harford, to explain all.

If you’ve seen a number in the news you think we should take a look at, let us know: moreorless@bbc.co.uk

Presenter: Lizzy McNeill
Reporter: Tim Harford
Series producer: Tom Colls
Sound mix: Donald MacDonald
Editor: Richard Vadon

Image credit: Johan Jarnestad / The Royal Swedish Academy of Sciences

Nobel economics prize 2025: What's the big idea?

Tim Harford investigates some of the numbers in the news. This week:

The Conservative party conference has been told that millions of people are getting free cars from the government because they have ADHD and anxiety. Is that right?

The chair of the Labour party says that only 3% of farmers will be affected by proposed changes to inheritance tax. Is that true?

The charity Movember claim that two in five men die too young. What does that really mean?

And Tim’s mid-life crisis has manifested itself in a marathon run. We ask a scientist if data can help him finish faster.

If you’ve seen a number in the news you think we should take a look at, let us know: moreorless@bbc.co.uk

Presenter: Tim Harford
Reporter: Nathan Gower
Producer: Lizzy McNeill
Series producer: Tom Colls
Production co-ordinator: Maria Ogundele
Sound mix: Gareth Jones
Editor: Richard Vadon

Are millions of people getting Motability cars for anxiety and ADHD?

In a recent speech to the UN, US president Donald Trump set out some remarkable figures on the proportion of inmates in European prisons who were foreign nationals.

Citing statistics from the Council of Europe, he references Greece, Germany and Austria, as having rates around 50%.

“In Switzerland, beautiful Switzerland,” he said “72% of the people in prisons are from outside of Switzerland.”
These numbers are correct, but why are the percentages so high – particularly in Switzerland?

Tim Harford speaks to Professor Marcelo Aebi, a criminologist from the University of Lausanne, who wrote the prisons report for the Council of Europe.

If you’ve seen a number in the news you think we should take a look at, let us know: moreorless@bbc.co.uk

Presenter: Tim Harford
Producer: Tom Colls
Sound mix: Rod Farquhar
Editor: Richard Vadon

Are 72% of prison inmates in Switzerland foreign?

Tim Harford investigates some of the numbers in the news. This week:

The Daily Mail says that over half of the UK population live in households that get more in benefits than they pay in tax - is it true?

Do some billionaires earn more in a night than the population of Bournemouth earns in a year? New Green leader Zack Polanski seems to think so - we scrutinise the figures.

Are older generations getting smarter?

Have 77% of Gen-Z brought a parent along to a job interview? Really?

If you’ve seen a number you think we should take a look at, email the team: moreorless@bbc.co.uk

Presenter: Tim Harford
Reporter: Lizzy McNeill
Producer: Nathan Gower
Series producer: Tom Colls
Production co-ordinator: Maria Ogundele
Sound mix: Duncan Hannant
Editor: Richard Vadon

Does half the UK get more in benefits than they pay in tax?

When you follow the news, particularly in countries like the UK and the US, it sometimes feels like people are less optimistic about their lives than they were in the past.
But a new piece of analysis from polling company Gallup suggests this might just be the local view, not the global one.
Using data from the Gallup World Poll, it suggests that “people in more countries are living better lives and expressing more hope for the future” than at any point in the last decade.

Tim Harford speaks to Gallup’s Benedict Vigers, who wrote the report, to understand what improvements in the “global median for thriving” really means.
If you’ve seen a number in the news you think we should look at, email the team: moreorless@bbc.co.uk

Presenter: Tim Harford
Series producer: Tom Colls
Sound mix: Bob Nettles
Editor: Richard Vadon

Is the world getting less miserable?

Birds + windows =? The BBC Quiz show The Unbelievable Truth reckons that more than 2 million birds die crashing into window panes every day in the US. Tim Harford finds this, well, unbelievable. Marcus du Sautoy explores the maths in Mozart's The Magic Flute; a student who uncovered a mistake in a famous economic paper, which has been used to make the case for austerity cuts, explains how he did it.

The Maths of Mozart and Birds

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