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Lex Fridman Podcast / episode intelligence

#433 – Sara Walker: Physics of Life, Time, Complexity, and Aliens

13 Jun 2024 45 published claims 2 attributable people

Speakers in the public record

Claim mix

belief 27uncertainty 6evaluation 5preference 4commitment 1observation 1prediction 1

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Every row below preserves an exact excerpt. Identified speakers are linked; unresolved voices are labeled and excluded from people counts.

Claim ledger

The useful parts, with receipts.

45 published records

02 / uncertainty

I think what is happening and will continue to happen is there’s a co-evolution between humans and technology that’s happening, and we’re coexisting in this ecosystem right now and we’re maintaining a lot of the balance. And for the balance to shift to the technology would require some very bad human actors, which is a real risk, or some sort of… I don’t know, some sort of dynamic that favors… I just don’t know how that plays out without human agency actually trying to put it in that direction.

“I think what is happening and will continue to happen is there’s a co-evolution between humans and technology that’s happening, and we’re coexisting in this ecosystem right now and we’re maintaining a lot of the balance. And for the balance to shift to the technology would require some very bad human actors, which is a real risk, or some sort of… I don’t know, some sort of dynamic that favors… I just don’t know how that plays out without human agency actually trying to put it in that direction.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

04 / belief

What I’ve tried really hard to do is not assume that I think life is anything except hold on to the patterns and structures that seem to be the sort of consistent ways that we talk about this thing.

“What I’ve tried really hard to do is not assume that I think life is anything except hold on to the patterns and structures that seem to be the sort of consistent ways that we talk about this thing.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

05 / belief

I think that’s the space that Stephen is talking about when he talks about his ruliad and these hypergraphs of all these possible computations. But I wouldn’t take that as my base reality because I think again, computation itself, this abstract property computation, is not at the base of reality.

“I think that’s the space that Stephen is talking about when he talks about his ruliad and these hypergraphs of all these possible computations. But I wouldn’t take that as my base reality because I think again, computation itself, this abstract property computation, is not at the base of reality.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

06 / belief

I guess that’s what motivates me as a scientist. And so oftentimes, when I look at open problems like the nature of life or consciousness or what is intelligence or are there souls or whatever question that we have that we feel like we aren’t even on the tip of answering yet, I think we have a lot more work to do to really understand the answers to these questions.

“I guess that’s what motivates me as a scientist. And so oftentimes, when I look at open problems like the nature of life or consciousness or what is intelligence or are there souls or whatever question that we have that we feel like we aren’t even on the tip of answering yet, I think we have a lot more work to do to really understand the answers to these questions.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

08 / belief

A lot of my, what happens in my mind when I’m thinking about ideas is I’ve been presented with this information about how people think about things, and I try to go around to different communities and hear the ways that different, whether it’s hanging out with a bunch of artists, or philosophers, or scientists thinking about things.

“A lot of my, what happens in my mind when I’m thinking about ideas is I’ve been presented with this information about how people think about things, and I try to go around to different communities and hear the ways that different, whether it’s hanging out with a bunch of artists, or philosophers, or scientists thinking about things.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

09 / belief

I think there is some deep underlying explanatory framework that will tell us about the nature of life in the universe and will allow us to identify life that we can’t yet recognize because it’s too different.

“I think there is some deep underlying explanatory framework that will tell us about the nature of life in the universe and will allow us to identify life that we can’t yet recognize because it’s too different.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

15 / commitment

I think the one that we can’t answer by answering life is why certain things exist and others don’t? But I think the ultimate question, the prime mover question of why anything exists, we will not be able to answer.

“I think the one that we can’t answer by answering life is why certain things exist and others don’t? But I think the ultimate question, the prime mover question of why anything exists, we will not be able to answer.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

16 / uncertainty

I think we do that quite a lot anyway without… It goes back to your… And I don’t know how to feel about this, but we talked already about the predator-prey thing that in some sense, being alive requires eating other things that are alive.

“I think we do that quite a lot anyway without… It goes back to your… And I don’t know how to feel about this, but we talked already about the predator-prey thing that in some sense, being alive requires eating other things that are alive.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

18 / belief

I think if you’re thinking about this thinking about living things as these giant causal structures or these objects that are deep in time or whatever language we end up using to describe it seems to me that consciousness is about the fact that we have a conscious experience is because we are these temporally extended objects.

“I think if you’re thinking about this thinking about living things as these giant causal structures or these objects that are deep in time or whatever language we end up using to describe it seems to me that consciousness is about the fact that we have a conscious experience is because we are these temporally extended objects.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

20 / belief

I think the thing that’s perplexing for me about these kind of examples is effectively the ant’s dead, but it’s staying alive now because piloted by this fungus.

“I think the thing that’s perplexing for me about these kind of examples is effectively the ant’s dead, but it’s staying alive now because piloted by this fungus.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

21 / belief

I think there’s not, I mean it very purposefully because a particular instantiation of a language model trained on a particular data set becomes a crystal of the language at that time it was trained, but obviously we’re iterating with the technology and evolving it.

“I think there’s not, I mean it very purposefully because a particular instantiation of a language model trained on a particular data set becomes a crystal of the language at that time it was trained, but obviously we’re iterating with the technology and evolving it.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

22 / belief

I think life emerges in chemistry because chemistry is the first thing the universe builds where it cannot exhaust all the possibilities, because the combinatorial space of chemistry is too large.

“I think life emerges in chemistry because chemistry is the first thing the universe builds where it cannot exhaust all the possibilities, because the combinatorial space of chemistry is too large.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

24 / evaluation

You tweeted, ” The world is not a computation, but computation is our best current language for understanding the world. It is important we recognize this so we can start to see the structure of our future languages that will allow us to see deeper than the computation allows us.

“You tweeted, ” The world is not a computation, but computation is our best current language for understanding the world. It is important we recognize this so we can start to see the structure of our future languages that will allow us to see deeper than the computation allows us.”
Speaker
Lex Fridman
Publisher
Lex Fridman Podcast

25 / belief

I think too few people think about the aesthetics they build for themselves in the morning and how they carry it in the world and the way that other people interact with that because they put clothes on and they don’t think about clothes as carrying function.

“I think too few people think about the aesthetics they build for themselves in the morning and how they carry it in the world and the way that other people interact with that because they put clothes on and they don’t think about clothes as carrying function.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

26 / belief

I think we have to get rid of the notion of an individual as being relevant. And this is really difficult because a lot of the ways that we think about life, like the fundamental unit of life is the cell, individuals are alive, but we don’t think about how gray that distinction is.

“I think we have to get rid of the notion of an individual as being relevant. And this is really difficult because a lot of the ways that we think about life, like the fundamental unit of life is the cell, individuals are alive, but we don’t think about how gray that distinction is.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

27 / belief

Oh, if it’s not chemical. So I think some of the things that have evolved on our biosphere I would call as much alive as chemistry, as a cell, but they seem much more abstract.

“Oh, if it’s not chemical. So I think some of the things that have evolved on our biosphere I would call as much alive as chemistry, as a cell, but they seem much more abstract.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

29 / belief

I think for me, the frontier in modern physics, where the new physics lies is not in high energy particle physics, it’s not in quantum gravity, it’s not in any of these sort of traditionally sold, “This is going to be the newest deepest insight we have into the nature of reality.

“I think for me, the frontier in modern physics, where the new physics lies is not in high energy particle physics, it’s not in quantum gravity, it’s not in any of these sort of traditionally sold, “This is going to be the newest deepest insight we have into the nature of reality.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

33 / observation

Just like at the origin of life, when geochemistry transitioned to biology, which is the global… For me, it was a planetary scale transition. It was a multiscale thing that happened from the scale of chemistry all the way to planetary cycles.

“Just like at the origin of life, when geochemistry transitioned to biology, which is the global… For me, it was a planetary scale transition. It was a multiscale thing that happened from the scale of chemistry all the way to planetary cycles.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

34 / belief

I think the first thing is the observation that life seems to be the only thing in the universe that builds complexity in the way that we see it here. And complexity is obviously a loaded term, so I’ll just use assembly instead because I think assembly is more precise.

“I think the first thing is the observation that life seems to be the only thing in the universe that builds complexity in the way that we see it here. And complexity is obviously a loaded term, so I’ll just use assembly instead because I think assembly is more precise.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

38 / evaluation

Language is another one where the space of possible configurations of the 26 letters of the English alphabet is astronomically large, but we use with very high regularity, certain structures. And then we associate meaning to them because of the regularity of how much we use them.

“Language is another one where the space of possible configurations of the 26 letters of the English alphabet is astronomically large, but we use with very high regularity, certain structures. And then we associate meaning to them because of the regularity of how much we use them.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

39 / evaluation

There’s this assumption that computation is at the base of reality, and I see it at the top of reality, not at the base, because I think computation was built by our biosphere.

“There’s this assumption that computation is at the base of reality, and I see it at the top of reality, not at the base, because I think computation was built by our biosphere.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

40 / preference

I like sight as an invention, because I think having sensory perception and trying to comprehend the world, to use anthropocentric terms, is a really critical feature of life.

“I like sight as an invention, because I think having sensory perception and trying to comprehend the world, to use anthropocentric terms, is a really critical feature of life.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

41 / prediction

I think that the problem of discovering alien life and solving the origin of life are deeply coupled and in fact are one in the same problem, and that the first contact with alien life will actually be in an origin of life experiment.

“I think that the problem of discovering alien life and solving the origin of life are deeply coupled and in fact are one in the same problem, and that the first contact with alien life will actually be in an origin of life experiment.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

43 / belief

I don’t believe in infinity as a physical thing, but I think as a receding horizon, I think because the universe is getting bigger, you can never know all of it.

“I don’t believe in infinity as a physical thing, but I think as a receding horizon, I think because the universe is getting bigger, you can never know all of it.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

44 / evaluation

The same laws describe them if we have the right material properties to talk about what those laws are actually interacting with. And so I think the issue with life is we don’t know how to think about information in a material way, and so we haven’t been able to build a unified description of what life is or the kind of things that evolution builds because we haven’t really invented the right material concept yet.

“The same laws describe them if we have the right material properties to talk about what those laws are actually interacting with. And so I think the issue with life is we don’t know how to think about information in a material way, and so we haven’t been able to build a unified description of what life is or the kind of things that evolution builds because we haven’t really invented the right material concept yet.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast

45 / preference

And then fashion is at the top, is the fastest moving part of human culture. And I think I really like that because it’s so dynamic and so short and it’s temporal longevity.

“And then fashion is at the top, is the fastest moving part of human culture. And I think I really like that because it’s so dynamic and so short and it’s temporal longevity.”
Speaker
Sara Walker
Publisher
Lex Fridman Podcast
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