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Sarah Walker

👤 Person
1530 total appearances

Appearances Over Time

Podcast Appearances

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

And I think it's really important to try to look for those because if there are narratives that humans have been telling ourselves for thousands of years, for thousands of generations, there must be some truth to them. We've been learning about reality for a really long time, and we recognize the patterns that reality presents us. We don't always understand what those patterns are.

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

And so I think it's really important to pay attention to that. So I don't think the vitalists were actually wrong. And a lot of what I talk about in the book, but also I think about a lot just professionally, is the nature of our definitions of what's material and how science has come to invent the concept of matter.

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

And so I think it's really important to pay attention to that. So I don't think the vitalists were actually wrong. And a lot of what I talk about in the book, but also I think about a lot just professionally, is the nature of our definitions of what's material and how science has come to invent the concept of matter.

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

And so I think it's really important to pay attention to that. So I don't think the vitalists were actually wrong. And a lot of what I talk about in the book, but also I think about a lot just professionally, is the nature of our definitions of what's material and how science has come to invent the concept of matter.

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

And that some of those things actually really are inventions that happened in a particular time in a particular technology that could learn about certain patterns. and help us understand them. And that there are some patterns we still don't understand.

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

And that some of those things actually really are inventions that happened in a particular time in a particular technology that could learn about certain patterns. and help us understand them. And that there are some patterns we still don't understand.

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

And that some of those things actually really are inventions that happened in a particular time in a particular technology that could learn about certain patterns. and help us understand them. And that there are some patterns we still don't understand.

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

And if we knew how to measure those things, or we knew how to describe them in a more rigorous way, we would realize that the material world matter has more properties than we thought that it did. And one of those might be associated with the thing that we call life. Life could be a material property and still have a lot of the features that the vitalists thought were mysterious.

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

And if we knew how to measure those things, or we knew how to describe them in a more rigorous way, we would realize that the material world matter has more properties than we thought that it did. And one of those might be associated with the thing that we call life. Life could be a material property and still have a lot of the features that the vitalists thought were mysterious.

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

And if we knew how to measure those things, or we knew how to describe them in a more rigorous way, we would realize that the material world matter has more properties than we thought that it did. And one of those might be associated with the thing that we call life. Life could be a material property and still have a lot of the features that the vitalists thought were mysterious.

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

Yeah. So I think about, I always like to use examples from physics, so I'll probably do that. It's just my go-to place. But in the history of gravitational physics, for example, in the history of motion, when Aristotle came up with his theories of motion, he did it by the material properties he thought things had.

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

Yeah. So I think about, I always like to use examples from physics, so I'll probably do that. It's just my go-to place. But in the history of gravitational physics, for example, in the history of motion, when Aristotle came up with his theories of motion, he did it by the material properties he thought things had.

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

Yeah. So I think about, I always like to use examples from physics, so I'll probably do that. It's just my go-to place. But in the history of gravitational physics, for example, in the history of motion, when Aristotle came up with his theories of motion, he did it by the material properties he thought things had.

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

So there was a concept of things falling to Earth because they were solid-like and things raising to the heavens because they were air-like and things moving around the planet because they were celestial-like.

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

So there was a concept of things falling to Earth because they were solid-like and things raising to the heavens because they were air-like and things moving around the planet because they were celestial-like.

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

So there was a concept of things falling to Earth because they were solid-like and things raising to the heavens because they were air-like and things moving around the planet because they were celestial-like.

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

But then we came to realize that thousands of years later and after the invention of many technologies that allowed us to actually measure time in a mechanistic way and track planetary motion, and we could roll balls down inclined planes and track that progress, we realized that if we just talked about mass and acceleration, we could unify all motion in the universe.

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

But then we came to realize that thousands of years later and after the invention of many technologies that allowed us to actually measure time in a mechanistic way and track planetary motion, and we could roll balls down inclined planes and track that progress, we realized that if we just talked about mass and acceleration, we could unify all motion in the universe.

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

But then we came to realize that thousands of years later and after the invention of many technologies that allowed us to actually measure time in a mechanistic way and track planetary motion, and we could roll balls down inclined planes and track that progress, we realized that if we just talked about mass and acceleration, we could unify all motion in the universe.

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

in a really simple description. So we didn't really have to worry about the fact that my cup is heavy and the air is light. 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.