We hear a lot about AI at the moment, don't we?

How it's going to replace our jobs, the threat it poses to humanity, how it's developing at

a rate that's alarming even those developing it.

But are the risks really that great?

And do they outweigh all the benefits? I mean, it's brought the Beatles back with a brand new song.

It's a new Beatles single, written by John Lennon, played by John, Paul, George and Ringo.

How great is that, a new Beatles release half a century after they broke up. All thanks to the magic of AI.

But this week, world leaders and tech experts have been trying to address all the worrying aspects of AI

at the world's first safety summit at Bletchley Park, home to World War II's code breakers

who crack the Nazis' enigma machine.

So, how's it gone? Let's find out. I'm Sally Lockwood and this is the Sky News Daily.

First, we're going to speak to Stuart Russell, an AI guru, or officially,

Professor of Computer Science at the University of

California, Berkeley, and a member of the World Economic Forum's Global AI Council.

So AI, artificial intelligence, is, I think most people understand it's about making machines

intelligent, and the question is, what does that mean? For most of the history of the field, it's about making machines intelligent and the question is what does that mean?

For most of the history of the field, it's meant something pretty simple that the machine's

actions can be expected to achieve its objectives. So if you think about using your GPS and

the objective is the destination that you want to get to, the algorithm figures out how to get there and then chooses where to turn left and turn right and all that stuff.

People have argued forever about whether it's actually thinking, whether it's really having subjective experience, whether it's conscious.

But from a practical point of view, we only really care about

what it does and what it's going to do. And for that, we don't have to answer the question of

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