Menu
Sign In Search Podcasts Charts People & Topics Add Podcast API Blog Pricing

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

And the next time we're in a similar situation, boom, we can supplement our knowledge with this information from episodic memory and reason about what the right thing to do is, right? It gives us this enormous amount of flexibility to stop on a dime and change without having to erase everything we've already learned.

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

That solution is incredibly powerful because it gives you the ability to learn from so much less information really, and it gives you that flexibility. One of the things I think that makes humans great is having both episodic and semantic memory. Now, can you build something like that?

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

That solution is incredibly powerful because it gives you the ability to learn from so much less information really, and it gives you that flexibility. One of the things I think that makes humans great is having both episodic and semantic memory. Now, can you build something like that?

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

That solution is incredibly powerful because it gives you the ability to learn from so much less information really, and it gives you that flexibility. One of the things I think that makes humans great is having both episodic and semantic memory. Now, can you build something like that?

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

I mean, computational neuroscience people would say, well, yeah, you just record a moment and you just get it and you're done, right? But when do you record that moment? How much do you record? What's the information you prioritize and what's the information you don't? These are the hard questions. When do you use episodic memory? When do you just throw it away?

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

I mean, computational neuroscience people would say, well, yeah, you just record a moment and you just get it and you're done, right? But when do you record that moment? How much do you record? What's the information you prioritize and what's the information you don't? These are the hard questions. When do you use episodic memory? When do you just throw it away?

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

I mean, computational neuroscience people would say, well, yeah, you just record a moment and you just get it and you're done, right? But when do you record that moment? How much do you record? What's the information you prioritize and what's the information you don't? These are the hard questions. When do you use episodic memory? When do you just throw it away?

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

And these are the hard questions we're still trying to figure out in people. And then you start to think about all these mechanisms that we have in the brain for figuring out some of these things. And it's not just one, but it's many of them that are interacting with each other.

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

And these are the hard questions we're still trying to figure out in people. And then you start to think about all these mechanisms that we have in the brain for figuring out some of these things. And it's not just one, but it's many of them that are interacting with each other.

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

And these are the hard questions we're still trying to figure out in people. And then you start to think about all these mechanisms that we have in the brain for figuring out some of these things. And it's not just one, but it's many of them that are interacting with each other.

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

And then you just take not only the episodic and the semantic, but then you start to take the motivational survival things, right? It's just like the fight or flight responses that we associate with particular things or the kind of like reward motivation that we associate with certain things, so forth. And those things are absent from AIA. I frankly don't know if we want it.

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

And then you just take not only the episodic and the semantic, but then you start to take the motivational survival things, right? It's just like the fight or flight responses that we associate with particular things or the kind of like reward motivation that we associate with certain things, so forth. And those things are absent from AIA. I frankly don't know if we want it.

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

And then you just take not only the episodic and the semantic, but then you start to take the motivational survival things, right? It's just like the fight or flight responses that we associate with particular things or the kind of like reward motivation that we associate with certain things, so forth. And those things are absent from AIA. I frankly don't know if we want it.

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

I don't necessarily want a self-motivated LLM, right? And then there's the problem of how do you even build the motivations that should guide a proper reinforcement learning kind of thing, for instance. Yeah.

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

I don't necessarily want a self-motivated LLM, right? And then there's the problem of how do you even build the motivations that should guide a proper reinforcement learning kind of thing, for instance. Yeah.

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

I don't necessarily want a self-motivated LLM, right? And then there's the problem of how do you even build the motivations that should guide a proper reinforcement learning kind of thing, for instance. Yeah.

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

A friend of mine, Sam Gershman, I might be missing the quote exactly, but he basically said, you know, if I wanted to train like a typical AI model to make me as much money as possible, first thing I might do is sell my house. So it's not even just about having one goal or one objective, but just having all these competing goals and objectives, right?

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

A friend of mine, Sam Gershman, I might be missing the quote exactly, but he basically said, you know, if I wanted to train like a typical AI model to make me as much money as possible, first thing I might do is sell my house. So it's not even just about having one goal or one objective, but just having all these competing goals and objectives, right?

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

A friend of mine, Sam Gershman, I might be missing the quote exactly, but he basically said, you know, if I wanted to train like a typical AI model to make me as much money as possible, first thing I might do is sell my house. So it's not even just about having one goal or one objective, but just having all these competing goals and objectives, right?

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

And then things start to get really complicated.