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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

Yeah. And the reason is, is that in some sense, I think, especially the farther we go back, I mean, there's all sorts of interesting things that happen. So your sense of like, if I ask you, how different does one hour ago feel from two hours ago, you'd probably say pretty different. But if I ask you, okay, go back one year ago versus one year and one hour ago, it's the same difference in time.

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

It won't feel very different, right? So there's this kind of compression that happens as you look back farther in time. So it's kind of like why when you're older, the difference between somebody who's like 50 and, you know, 45 doesn't seem as big as the difference between like 10 and five or something, right? When you're 10 years old, everything seems like it's a long period of time.

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

It won't feel very different, right? So there's this kind of compression that happens as you look back farther in time. So it's kind of like why when you're older, the difference between somebody who's like 50 and, you know, 45 doesn't seem as big as the difference between like 10 and five or something, right? When you're 10 years old, everything seems like it's a long period of time.

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

It won't feel very different, right? So there's this kind of compression that happens as you look back farther in time. So it's kind of like why when you're older, the difference between somebody who's like 50 and, you know, 45 doesn't seem as big as the difference between like 10 and five or something, right? When you're 10 years old, everything seems like it's a long period of time.

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

Here's the point is that, you know, so one of the interesting things that I found while I was working on the book actually was during the pandemic, I just decided to ask people in my class when we were doing the remote instruction. So one of the things I did was I would poll people. And so I just asked people, do you feel like the days are moving by slower or faster or about the same? Yeah.

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

Here's the point is that, you know, so one of the interesting things that I found while I was working on the book actually was during the pandemic, I just decided to ask people in my class when we were doing the remote instruction. So one of the things I did was I would poll people. And so I just asked people, do you feel like the days are moving by slower or faster or about the same? Yeah.

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

Here's the point is that, you know, so one of the interesting things that I found while I was working on the book actually was during the pandemic, I just decided to ask people in my class when we were doing the remote instruction. So one of the things I did was I would poll people. And so I just asked people, do you feel like the days are moving by slower or faster or about the same? Yeah.

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

Almost everyone in the class said that the days were moving by slower. So then I would say, okay, so do you feel like the weeks are passing by slower, faster, or the same? And the majority of them said that the weeks were passing by faster. So according to the laws of physics, I don't think that makes any sense, right?

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

Almost everyone in the class said that the days were moving by slower. So then I would say, okay, so do you feel like the weeks are passing by slower, faster, or the same? And the majority of them said that the weeks were passing by faster. So according to the laws of physics, I don't think that makes any sense, right?

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

Almost everyone in the class said that the days were moving by slower. So then I would say, okay, so do you feel like the weeks are passing by slower, faster, or the same? And the majority of them said that the weeks were passing by faster. So according to the laws of physics, I don't think that makes any sense, right?

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

But according to memory, it did, because what happened was people were doing the same thing over and over in the same context. And without that change in context, their feeling was that they were in one long, monotonous event. Right. And so but then at the end of the week, you look back at that week and you say, well, what happened? No memories of what happened.

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

But according to memory, it did, because what happened was people were doing the same thing over and over in the same context. And without that change in context, their feeling was that they were in one long, monotonous event. Right. And so but then at the end of the week, you look back at that week and you say, well, what happened? No memories of what happened.

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

But according to memory, it did, because what happened was people were doing the same thing over and over in the same context. And without that change in context, their feeling was that they were in one long, monotonous event. Right. And so but then at the end of the week, you look back at that week and you say, well, what happened? No memories of what happened.

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

So it must that week just went by without even my noticing it. But that week went by during the same amount of time as an eventful week where you might have been going out, hanging out with friends on vacation or whatever. Right. It's just that nothing happened because you're doing the same thing over and over. So I feel like memory really shapes our sense of time.

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

So it must that week just went by without even my noticing it. But that week went by during the same amount of time as an eventful week where you might have been going out, hanging out with friends on vacation or whatever. Right. It's just that nothing happened because you're doing the same thing over and over. So I feel like memory really shapes our sense of time.

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

So it must that week just went by without even my noticing it. But that week went by during the same amount of time as an eventful week where you might have been going out, hanging out with friends on vacation or whatever. Right. It's just that nothing happened because you're doing the same thing over and over. So I feel like memory really shapes our sense of time.

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

But it does so in part because context is so important for memory.

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

But it does so in part because context is so important for memory.

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

But it does so in part because context is so important for memory.

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

Like you don't feel the passage of time or?