Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
And I wanted to follow that tradition.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
What I was talking about there is if you take a step back and you look at all the work that we've done, especially with the Alpha X projects.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
So I'm thinking AlphaGo, of course, AlphaFold.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
What they really are is we're building models of very combinatorially high dimensional spaces.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
that if you try to brute force a solution, find the best move and go, or find the exact shape of a protein, and if you enumerated all the possibilities, there wouldn't be enough time in the time of the universe.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
So you have to do something much smarter.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
And what we did in both cases was build models of those environments.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
And that guided the search in a smart way.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
And that makes it tractable.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
So if you think about protein folding, which is obviously a natural system, you know, why should that be possible?
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
How does physics do that?
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
You know, proteins fold in milliseconds in our bodies.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
So somehow physics solves this problem that we've now also solved computationally.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
And I think the reason that's possible is that in nature, natural systems have structure because they were subject to evolutionary processes that shape them.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
And if that's true, then you can maybe learn what that structure is.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
Yeah, I sometimes call it survival of the stabilist or something like that because, of course, there's evolution for life, living things.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
But there's also, if you think about geological time, so the shape of mountains, that's been shaped by weathering processes.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
right, over thousands of years.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
But then you can even take it cosmological, the orbits of planets, the shapes of asteroids.
Lex Fridman Podcast
#475 โ Demis Hassabis: Future of AI, Simulating Reality, Physics and Video Games
These have all been survived kind of processes that have acted on them many, many times.