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Charan Ranganath

๐Ÿ‘ค Speaker
3063 total appearances

Appearances Over Time

Podcast Appearances

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Right now, I think I've, as an outsider looking at the data, I think it's like mixed results. And part of it is, and this speaks to the more complex issue, is that you need somebody to actually fully recall that traumatic memory in the first place. And in order to actually modify it, then what is the memory? That is the key part of the problem.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Right now, I think I've, as an outsider looking at the data, I think it's like mixed results. And part of it is, and this speaks to the more complex issue, is that you need somebody to actually fully recall that traumatic memory in the first place. And in order to actually modify it, then what is the memory? That is the key part of the problem.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So if we go back to reading people's thoughts, what is the thought? I mean, people can sometimes look at this like behaviorists and go, well, the memory is like I've given you A and you produce B. And I think that's a very bankrupt concept about memory. I think it's much more complicated than that. And one of the things that when we started studying naturalistic memory, like memory from movies,

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So if we go back to reading people's thoughts, what is the thought? I mean, people can sometimes look at this like behaviorists and go, well, the memory is like I've given you A and you produce B. And I think that's a very bankrupt concept about memory. I think it's much more complicated than that. And one of the things that when we started studying naturalistic memory, like memory from movies,

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So if we go back to reading people's thoughts, what is the thought? I mean, people can sometimes look at this like behaviorists and go, well, the memory is like I've given you A and you produce B. And I think that's a very bankrupt concept about memory. I think it's much more complicated than that. And one of the things that when we started studying naturalistic memory, like memory from movies,

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

that was so hard was we had to change the way we did the studies because if i show you a movie and i show and i watch the same movie and you recall everything that happened and i recall everything that happened we might take a different amount of time to do it we might use different words and yet to an outside observer we might have recalled the same thing right

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

that was so hard was we had to change the way we did the studies because if i show you a movie and i show and i watch the same movie and you recall everything that happened and i recall everything that happened we might take a different amount of time to do it we might use different words and yet to an outside observer we might have recalled the same thing right

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

that was so hard was we had to change the way we did the studies because if i show you a movie and i show and i watch the same movie and you recall everything that happened and i recall everything that happened we might take a different amount of time to do it we might use different words and yet to an outside observer we might have recalled the same thing right

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So it's not about the words necessarily, and it's not about how long we spent or whatever. There's something deeper that is there that's this idea, but it's like, how do you understand that thought? I encounter a lot of concrete thinking that it's like, if I show... a model like the visual information that a person sees when they drive, I can basically reverse engineer driving.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So it's not about the words necessarily, and it's not about how long we spent or whatever. There's something deeper that is there that's this idea, but it's like, how do you understand that thought? I encounter a lot of concrete thinking that it's like, if I show... a model like the visual information that a person sees when they drive, I can basically reverse engineer driving.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

So it's not about the words necessarily, and it's not about how long we spent or whatever. There's something deeper that is there that's this idea, but it's like, how do you understand that thought? I encounter a lot of concrete thinking that it's like, if I show... a model like the visual information that a person sees when they drive, I can basically reverse engineer driving.

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Well, that's not really how it works. I once saw a talk by somebody, or I saw somebody talking in this discussion between neuroscientists and AI people, and he was saying that the problem with self-driving cars that they had in cities as opposed to highways was that the car was okay at doing the things it's supposed to,

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Well, that's not really how it works. I once saw a talk by somebody, or I saw somebody talking in this discussion between neuroscientists and AI people, and he was saying that the problem with self-driving cars that they had in cities as opposed to highways was that the car was okay at doing the things it's supposed to,

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

Well, that's not really how it works. I once saw a talk by somebody, or I saw somebody talking in this discussion between neuroscientists and AI people, and he was saying that the problem with self-driving cars that they had in cities as opposed to highways was that the car was okay at doing the things it's supposed to,

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

But when there were pedestrians around, it couldn't predict the intentions of people. And so that unpredictability of people was the problem that they were having in, you know, the self-driving car design because it didn't have a good enough internal model of what the people were, you know, what they were doing, what they wanted. And what do you think about that?

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

But when there were pedestrians around, it couldn't predict the intentions of people. And so that unpredictability of people was the problem that they were having in, you know, the self-driving car design because it didn't have a good enough internal model of what the people were, you know, what they were doing, what they wanted. And what do you think about that?

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

But when there were pedestrians around, it couldn't predict the intentions of people. And so that unpredictability of people was the problem that they were having in, you know, the self-driving car design because it didn't have a good enough internal model of what the people were, you know, what they were doing, what they wanted. And what do you think about that?

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

You think an LLM is building that world model?

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

You think an LLM is building that world model?

Lex Fridman Podcast
#430 โ€“ Charan Ranganath: Human Memory, Imagination, Deja Vu, and False Memories

You think an LLM is building that world model?