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Sarah Walker

๐Ÿ‘ค Speaker
1530 total appearances

Appearances Over Time

Podcast Appearances

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

Yeah, this is kind of cool. I'll answer the question in a second, but it's just maybe like this idea of flickering lights and intelligence is interesting to me because I, you know, like we have such a human centric view of alien intelligences that a lot of the work that I've been doing with my lab is just trying to take inspiration from non-human life on earth.

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

And so I have this really talented undergrad student that's basically building a model of alien communication based on fireflies. So one of my colleagues, Orit Peleg, she's totally brilliant, but she goes out with GoPro cameras and films in high resolution, all these firefly flickering. And she has this theory about how their signaling evolved to maximally differentiate the flickering pattern.

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

And so I have this really talented undergrad student that's basically building a model of alien communication based on fireflies. So one of my colleagues, Orit Peleg, she's totally brilliant, but she goes out with GoPro cameras and films in high resolution, all these firefly flickering. And she has this theory about how their signaling evolved to maximally differentiate the flickering pattern.

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

And so I have this really talented undergrad student that's basically building a model of alien communication based on fireflies. So one of my colleagues, Orit Peleg, she's totally brilliant, but she goes out with GoPro cameras and films in high resolution, all these firefly flickering. And she has this theory about how their signaling evolved to maximally differentiate the flickering pattern.

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

So she has a theory basically that predicts this species should flash If this one's flashing like this, this other one's going to do it at a slower rate so that, you know, like they can distinguish each other living in the same environment.

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

So she has a theory basically that predicts this species should flash If this one's flashing like this, this other one's going to do it at a slower rate so that, you know, like they can distinguish each other living in the same environment.

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

So she has a theory basically that predicts this species should flash If this one's flashing like this, this other one's going to do it at a slower rate so that, you know, like they can distinguish each other living in the same environment.

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

And so this undergrad's building this model where you have like a pulsar background of all these like giant flashing sources in the universe and an alien intelligence, you know, wants to signal it's there. So it's flashing like a firefly. And I just like I like the idea of thinking about non-human aliens. So that was really fun.

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

And so this undergrad's building this model where you have like a pulsar background of all these like giant flashing sources in the universe and an alien intelligence, you know, wants to signal it's there. So it's flashing like a firefly. And I just like I like the idea of thinking about non-human aliens. So that was really fun.

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

And so this undergrad's building this model where you have like a pulsar background of all these like giant flashing sources in the universe and an alien intelligence, you know, wants to signal it's there. So it's flashing like a firefly. And I just like I like the idea of thinking about non-human aliens. So that was really fun.

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

That's what... Yeah, well, I think there's some ways we might be able to differentiate that signal. I'm still thinking about this part of it. So one is like if you have pulsars and they all have a certain spectrum to their pulsing patterns... And you have this one signal that's in there that's basically tried to maximally differentiate itself from all the other sources in the universe.

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

That's what... Yeah, well, I think there's some ways we might be able to differentiate that signal. I'm still thinking about this part of it. So one is like if you have pulsars and they all have a certain spectrum to their pulsing patterns... And you have this one signal that's in there that's basically tried to maximally differentiate itself from all the other sources in the universe.

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

That's what... Yeah, well, I think there's some ways we might be able to differentiate that signal. I'm still thinking about this part of it. So one is like if you have pulsars and they all have a certain spectrum to their pulsing patterns... And you have this one signal that's in there that's basically tried to maximally differentiate itself from all the other sources in the universe.

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

It might stick out in the distribution. Like there might be ways of actually being able to tell if it's an anomalous pulsar, basically. But I don't know if that would really work or not. So still thinking about it.

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

It might stick out in the distribution. Like there might be ways of actually being able to tell if it's an anomalous pulsar, basically. But I don't know if that would really work or not. So still thinking about it.

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

It might stick out in the distribution. Like there might be ways of actually being able to tell if it's an anomalous pulsar, basically. But I don't know if that would really work or not. So still thinking about it.

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

Like, you know, like, they have ears and things. Like, it's such, like, a weird, grotesque aesthetic. But, like, it's totally bizarre. But what I meant โ€“ like, I have a visceral experience when I walk into my closet. I have, like, a lot of โ€“

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

Like, you know, like, they have ears and things. Like, it's such, like, a weird, grotesque aesthetic. But, like, it's totally bizarre. But what I meant โ€“ like, I have a visceral experience when I walk into my closet. I have, like, a lot of โ€“

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

Like, you know, like, they have ears and things. Like, it's such, like, a weird, grotesque aesthetic. But, like, it's totally bizarre. But what I meant โ€“ like, I have a visceral experience when I walk into my closet. I have, like, a lot of โ€“

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

It's like I do assembly theory every morning when I walk in my closet because I really like a very large, combinatorial, diverse palette, but I never know what I'm going to build in the morning.