

Understand
BBC Radio 4
NEW in Understand - The TripThe story of psychedelics. It's a unique moment. After decades of taboo and blanket illegality, policymakers and research institutions are taking these substances seriously. As a new dawn of psychedelic treatment beckons, Tim Hayward makes a personal journey into how we got here and where this is all heading.
Understand from BBC Radio 4 - unravelling the complexities of the biggest stories and subjects that really matter right now.
Understand from BBC Radio 4 - unravelling the complexities of the biggest stories and subjects that really matter right now.
Episodes
Mentioned books

8 snips
Oct 17, 2023 • 15min
Israel and the Palestinians: 2. Israel
Katya Adler and guests explain the context of the conflict, exploring issues and history that will help you get to grips with what’s going on today. In this episode we'll look at what’s shaped modern Israel.

10 snips
Oct 16, 2023 • 13min
Israel and the Palestinians: 1. The Palestinians
Katya Adler, Journalist and Middle East expert, explains the history and context of the Israel-Palestine conflict, focusing on life in Gaza and the West Bank, highlighting the restrictive living conditions, poverty, and challenges faced by Palestinians. The podcast also explores the creation of Israel, the Balfour Declaration, Jewish immigration restrictions, and the events leading up to the Arab-Israeli war in 1948.

Jul 7, 2023 • 14min
Tech and AI: 10. Can We Control AI?
When so-called "generative" Artificial Intelligences like Chat GPT and Google's Bard were made available to the public, they made headlines around the world and raised fears about how fast this type of AI was developing. But realistically, what harm could AI do to people? Is it an existential threat, or could it become one? And if things got really bad, couldn't we just switch it off or smash it up with a hammer? Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? Where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Programme Coordinator: Janet Staples

4 snips
Jul 7, 2023 • 15min
Tech and AI: 9. Will AI Take My Job?
AI is now able to do some types of work faster and cheaper than human beings, and some workers have already found themselves out of a job. Earlier this year, a report from Goldman Sachs said that AI could potentially replace the equivalent of 300 million full-time jobs, and a different survey of 12 thousand people suggested that a third were worried their bosses would replace them with AI. So is AI coming for your job? What type of workers are most at risk, and if you aren't replaced, could you find yourself working alongside an AI? Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers Ravi Naik and Nick Holland
Editor: Clare Fordham
Programme Coordinator: Janet Staples

Jul 7, 2023 • 14min
Tech and AI: 8. The Algorithm
At its simplest, an algorithm is a sequence of step-by-step instructions designed to give a result. They are the building blocks of every computer program and are there to ensure every digital device gives the right results on request. For example, when we type a search query into Google, its algorithms try to give us the result we're seeking. In the case of Social Media, the algorithm's job is to keep followers on a platform, by showing engaging, interesting, and relevant posts. But over the years they’ve increasingly been entrusted with life-altering decisions, such as A-level results during the pandemic.So how are algorithms being used? Why do many people distrust them, and try to beat them?Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. Where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Programme Coordinator: Janet Staples

Jul 7, 2023 • 14min
Tech and AI: 7. Where is AI Working Already?
Artificial Intelligence is already here. It's being used in products and services you already use, and is working behind the scenes in medicine, transportation, robotics, science, education, the military, surveillance, finance , agriculture, entertainment, retail, customer service, and manufacturing. How is is AI being used in these sectors, and for what purpose? And with the release of chatbots that can emulate human writing, we're now seeing websites that say they're "powered by Chat GPT". What does that mean? Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Production Coordinator: Janet Staples

Jul 7, 2023 • 14min
Tech and AI: 6. What is AI?
Artificial Intelligence has been in the news constantly this year, from a chatbot that can write anything you can imagine, in any style, to scientists and world leaders warning that AI needs to be controlled. With the big tech firms all rushing to make their AI products available to the public, it looks like AI is likely to be part of our lives from now on. But what is it? What are the different types of AI we should know about? Are they intelligent, in a way we would recognise, and are they conscious? And what does machine learning mean?Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Production Coordinator: Janet Staples

Jul 3, 2023 • 14min
Tech and AI: 5. Big Data
Big data is vast, unwieldy information that is so huge that normal software traditionally used to analyse it just can't cope. It's not new. Ever since humans organised ourselves, we've been keeping records, and gathering information, from scrolls, to bank ledgers and now your internet browsing history. But his information is now flowing into organisations at a faster rate and in greater volume than ever before. Taking a good look at it could provide meaningful insights. But how can you spot patterns in the chaos, without the job taking forever? And what insights could this mega data analysis provide? Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Production Coordinator: Janet Staples

Jul 3, 2023 • 13min
Tech and AI: 4. Cryptocurrency, Blockchain and Web 3.0
You might be wary of using digital currencies, but you probably already do. Salaries, benefits and pensions are now paid direct to banks, and when you buy a coffee, you may well use a contactless card to pay, without a flutter of a 5 pound note in sight. So what are online cryptocurrencies like Bitcoin, and why won't some people touch those with a barge pole? And when you hear about them, another word always pops up - Blockchain. What does it do? And how could both become important when we start to use the next version of the Internet, called web 3.0? Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what are VR and AR? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Production Coordinator: Janet Staples

Jul 3, 2023 • 15min
Tech and AI: 3. VR, AR and the Metaverse
Just by putting on a headset, Virtual Reality promises to immerse you in another world, and Augmented Reality takes that world and brings it into your living room. How do they work? It's a type of technology that seems to have been "the next big thing" for at least a decade. But are they just expensive toys, or do they have a use beyond gaming? In a similar vein, you may have seen adverts for the Metaverse, and that Facebook's parent company is pumping huge amounts of money into it. But what is it? How are Virtual Reality and Augmented Reality linked to the Metaverse, and will they make it...a reality? Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? How does Broadband work and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.Presenter: Spencer Kelly
Producers: Ravi Naik and Nick Holland
Editor: Clare Fordham
Production Coordinator: Janet Staples


