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Latest Episodes:

Ants and Algorithms Jan 09, 2021

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What can ants tells us about whether something deserves to be popular? This is a question tackled in David Sumpter’s book – ‘The Ten Equations that Rule the World: And How You Can Use Them Too.’ He tells Tim Harford about some of the algorithms that you see in nature, and those harnessed by tech companies such as YouTube.

Numbers of the year: Part two Jan 08, 2021

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From the economic impact of Covid 19 to the number of people who have access to soap and water, we showcase figures that tell us something about 2020. Tim Harford asks a group of numbers-minded people to take a look back on the year and think of one statistic that really stands out for them. We speak to Razia Khan, the head of research and chief economist for Africa and the Middle East at Standard Chartered; Sana Safi, presenter for BBC Pashto TV at the BBC's Afghanistan Service; and Jennifer Rogers, vice president for external affairs at the Royal Statistical Society. Presenter: Tim Harford Producer: Charlotte McDonald

Numbers of the year: Part one Jan 08, 2021

Show notes

Tim Harford asks a group of numbers-minded people to take a look back on the year and think of one statistic that really stands out for them. From the spread of Covid-19 to the number of songs added to Spotify this year, we showcase figures that tell us something about 2020. We speak to Oliver Johnson, professor of information theory at the University of Bristol in the UK; Anne-Marie Imafidon, creator and CEO of social enterprise Stemettes; and economist Joel Waldfogel, of the University of Minnesota.

The economics of a Covid Christmas Dec 19, 2020

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Tim Harford asks economist Joel Waldfogel how Covid 19 could affect spending at Christmas this year. They discuss the usual bump in sales and gift giving. The author of ‘Scroogenomics’ usually argues that presents are rarely as valued by the recipient compared to something they might buy for themselves. But what should people do this year?

QAnon: Child runaways and trafficking numbers debunked Dec 12, 2020

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Tim Harford looks at false statistical claims online about missing and trafficked children in the US. These numbers have resurfaced online in part due to conspiracy theorists following QAnon. In the past few months they have inspired protests under the banner - ‘Save Our Children’. We wade through some of the false numbers with the help of Michael Hobbes, a reporter for Huff Post and the co-host of the podcast called You're Wrong About.

Vaccines: how safe and who gets it? Dec 05, 2020

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The UK has become the first country in the world to approve the use of a vaccine for Covid 19. But some people are worried that the decision was taken too quickly - can we really know it’s safe yet? Tim Harford tackles these safety concerns. Plus, what is the best way to distribute the vaccine? How do you maximise the benefit of the first round of vaccines? Stuart McDonald, a fellow of the Institute and Faculty of Actuaries in the UK works out what groups would benefit most.

Tracking Covid 19 Nov 28, 2020

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This year has shown us the importance of good robust data - as Covid-19 spread around the world it was vital to track where it was, how many people it was infecting and where it might go next. On More or Less we’ve spent months reporting on data inaccuracies and vacuums, but what makes for good or indeed bad data? I’ve been speaking to Amy Maxmen, Senior reporter at the scientific journal ‘Nature’ about which countries are getting data collection right and which aren’t.

Inviting Covid for Dinner Nov 21, 2020

Show notes

If you go to a gathering of 25 or more people, what are the chances one of you has coronavirus?

Imagine that you’re planning to hold some sort of gathering or dinner at your home. Take your pick of big festivities - it’s Thanksgiving in the US, we’ve just had Diwali and Christmas is on the horizon. In some places such a gathering is simply illegal anyway. But if it IS legal, is it wise?

Professor Joshua Weitz and his team at Georgia Tech in the US have created a tool which allows people in the US and some European countries to select the county they live in, and the size of gathering they are intending on having, and then it calculates the chances that someone at that party, has Covid 19.

Presenter: Tim Harford Producer: Charlotte McDonald

Vaccine numbers Nov 14, 2020

Show notes

A vaccine which has shown in a clinical trial to be 90% effective against Covid 19 has been widely welcomed. But what does it mean and how was it worked out? Although experts and politicians urge caution, how excited can we be about the results of this trial of the vaccine developed by Pfizer and BioNTech? Tim Harford explores what we know about this new vaccine candidate with Jennifer Rogers, vice president of the Royal Statistical Society in the UK, and she also works for Phastar, a consultancy which specialises in analysing clinical trials. Presenter: Tim Harford Producer: Charlotte McDonald

How deadly is Covid 19? Nov 07, 2020

Show notes

Tim Harford explores what we know about mortality rates in the current pandemic. We discuss the differences between the risks to different age groups, and why that has an effect on a country’s Covid 19 fatality rate. We speak to Dr Hannah Ritchie from the University of Oxford and Dr Daniel Howdon of the University of Leeds in the UK.

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