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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

build itself into a quantum computer and it would want to operate in the vacuum of space because that's the best place to do quantum computation. And it would just like run out all of its computations indefinitely, but it would look completely dark to the rest of the universe. And I don't think as typical, like I don't think that's actually like the right physics because

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

build itself into a quantum computer and it would want to operate in the vacuum of space because that's the best place to do quantum computation. And it would just like run out all of its computations indefinitely, but it would look completely dark to the rest of the universe. And I don't think as typical, like I don't think that's actually like the right physics because

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

build itself into a quantum computer and it would want to operate in the vacuum of space because that's the best place to do quantum computation. And it would just like run out all of its computations indefinitely, but it would look completely dark to the rest of the universe. And I don't think as typical, like I don't think that's actually like the right physics because

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

But I think something about that idea, as I do with all ideas, is partially correct. And Freeman Dyson also had this amazing paper about how long life could persist in a universe that was exponentially expanding. And his conception was like if you imagine analog life form, it could run slower and slower and slower and slower and slower as a function of time.

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

But I think something about that idea, as I do with all ideas, is partially correct. And Freeman Dyson also had this amazing paper about how long life could persist in a universe that was exponentially expanding. And his conception was like if you imagine analog life form, it could run slower and slower and slower and slower and slower as a function of time.

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

But I think something about that idea, as I do with all ideas, is partially correct. And Freeman Dyson also had this amazing paper about how long life could persist in a universe that was exponentially expanding. And his conception was like if you imagine analog life form, it could run slower and slower and slower and slower and slower as a function of time.

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

And so it would be able to run indefinitely even against an exponentially expanding universe because it would just run exponentially slower. And so I guess part of what I'm doing in my brain is putting those two things together along with this idea that we are building, you know, like if you imagine with our technology, we're now building virtual realities, right?

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

And so it would be able to run indefinitely even against an exponentially expanding universe because it would just run exponentially slower. And so I guess part of what I'm doing in my brain is putting those two things together along with this idea that we are building, you know, like if you imagine with our technology, we're now building virtual realities, right?

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

And so it would be able to run indefinitely even against an exponentially expanding universe because it would just run exponentially slower. And so I guess part of what I'm doing in my brain is putting those two things together along with this idea that we are building, you know, like if you imagine with our technology, we're now building virtual realities, right?

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

Like things we actually call virtual reality, which required, you know, four billion years of history and a whole bunch of data to basically embed them in a computer architecture. So now you can put like you know, an Oculus headset on and think that you're in this world, right? And what you really are embedded in is in a very deep temporal structure.

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

Like things we actually call virtual reality, which required, you know, four billion years of history and a whole bunch of data to basically embed them in a computer architecture. So now you can put like you know, an Oculus headset on and think that you're in this world, right? And what you really are embedded in is in a very deep temporal structure.

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

Like things we actually call virtual reality, which required, you know, four billion years of history and a whole bunch of data to basically embed them in a computer architecture. So now you can put like you know, an Oculus headset on and think that you're in this world, right? And what you really are embedded in is in a very deep temporal structure.

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

And so it's huge in time, but it's very small in space. And you can go lots of places in the virtual space, right? But you're still stuck in like your physical body and like sitting in the chair. And so, you know, part of it is it might be the case that sufficiently evolved technology

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

And so it's huge in time, but it's very small in space. And you can go lots of places in the virtual space, right? But you're still stuck in like your physical body and like sitting in the chair. And so, you know, part of it is it might be the case that sufficiently evolved technology

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

And so it's huge in time, but it's very small in space. And you can go lots of places in the virtual space, right? But you're still stuck in like your physical body and like sitting in the chair. And so, you know, part of it is it might be the case that sufficiently evolved technology

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

Biospheres kind of virtualize themselves, and they internalize their universe in their sort of temporal causal structure, and they close themselves off from the rest of the universe.

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

Biospheres kind of virtualize themselves, and they internalize their universe in their sort of temporal causal structure, and they close themselves off from the rest of the universe.

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

Biospheres kind of virtualize themselves, and they internalize their universe in their sort of temporal causal structure, and they close themselves off from the rest of the universe.

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

No, I don't either. So that's kind of my fear. So I'm not sure I'm agreeing with what I say. I'm just saying like this is one sort of conclusion. And, you know, like in my most sort of like โ€“ it's interesting because I don't do psychedelic drugs.

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

No, I don't either. So that's kind of my fear. So I'm not sure I'm agreeing with what I say. I'm just saying like this is one sort of conclusion. And, you know, like in my most sort of like โ€“ it's interesting because I don't do psychedelic drugs.