Charan Ranganath
๐ค SpeakerAppearances Over Time
Podcast Appearances
It's this kind of very biased sample, but it's biased in an interesting and I think biologically relevant way.
It's this kind of very biased sample, but it's biased in an interesting and I think biologically relevant way.
Basically, I think that a lot of learning in the brain is driven towards being able to make sense. I mean, really, memory is all about the present and the future. The past is done, so biologically speaking, it's not important unless there's something from the past that's useful.
Basically, I think that a lot of learning in the brain is driven towards being able to make sense. I mean, really, memory is all about the present and the future. The past is done, so biologically speaking, it's not important unless there's something from the past that's useful.
Basically, I think that a lot of learning in the brain is driven towards being able to make sense. I mean, really, memory is all about the present and the future. The past is done, so biologically speaking, it's not important unless there's something from the past that's useful.
And so what our brains are really optimized for is to learn about the stuff from the past that's going to be most useful in understanding the present and predicting the future, right? And so cause-effect relationships, for instance, that's a big one. Now, my future is completely unpredictable in the sense that you could, in the next 10 minutes, pull a knife on me and slit my throat, right?
And so what our brains are really optimized for is to learn about the stuff from the past that's going to be most useful in understanding the present and predicting the future, right? And so cause-effect relationships, for instance, that's a big one. Now, my future is completely unpredictable in the sense that you could, in the next 10 minutes, pull a knife on me and slit my throat, right?
And so what our brains are really optimized for is to learn about the stuff from the past that's going to be most useful in understanding the present and predicting the future, right? And so cause-effect relationships, for instance, that's a big one. Now, my future is completely unpredictable in the sense that you could, in the next 10 minutes, pull a knife on me and slit my throat, right?
I was planning on it. Exactly. But having seen some of your work, generally my expectations about life, I'm not expecting that. I have a certainty that everything's going to be fine. We're going to have a great time talking today, right? But we're often right. It's like, okay, so I go to see a band on stage. I know they're going to make me wait. The show's going to start late. They come on.
I was planning on it. Exactly. But having seen some of your work, generally my expectations about life, I'm not expecting that. I have a certainty that everything's going to be fine. We're going to have a great time talking today, right? But we're often right. It's like, okay, so I go to see a band on stage. I know they're going to make me wait. The show's going to start late. They come on.
I was planning on it. Exactly. But having seen some of your work, generally my expectations about life, I'm not expecting that. I have a certainty that everything's going to be fine. We're going to have a great time talking today, right? But we're often right. It's like, okay, so I go to see a band on stage. I know they're going to make me wait. The show's going to start late. They come on.
There's a very good chance there's going to be an encore onstage. I have a memory, so to speak, for that event before I've even walked into the show, right? There's going to be people holding up their camera phones to try to take videos of it now because this is kind of the world we live in. So that's like everyday fortune-telling that we do, though. It's not... real, it's imagined.
There's a very good chance there's going to be an encore onstage. I have a memory, so to speak, for that event before I've even walked into the show, right? There's going to be people holding up their camera phones to try to take videos of it now because this is kind of the world we live in. So that's like everyday fortune-telling that we do, though. It's not... real, it's imagined.
There's a very good chance there's going to be an encore onstage. I have a memory, so to speak, for that event before I've even walked into the show, right? There's going to be people holding up their camera phones to try to take videos of it now because this is kind of the world we live in. So that's like everyday fortune-telling that we do, though. It's not... real, it's imagined.
And it's amazing that we have this capability, and that's what memory is about. But it can also give us this illusion that we know everything that's about to happen. And I think what's valuable about that illusion is when it's broken, it gives us the information, right? I'm sure being an AI, you know about information theory, and the idea is the information is what you didn't already have.
And it's amazing that we have this capability, and that's what memory is about. But it can also give us this illusion that we know everything that's about to happen. And I think what's valuable about that illusion is when it's broken, it gives us the information, right? I'm sure being an AI, you know about information theory, and the idea is the information is what you didn't already have.
And it's amazing that we have this capability, and that's what memory is about. But it can also give us this illusion that we know everything that's about to happen. And I think what's valuable about that illusion is when it's broken, it gives us the information, right? I'm sure being an AI, you know about information theory, and the idea is the information is what you didn't already have.
And so those prediction errors that we make based on, you know, we make a prediction based on memory and the errors are where the action is.
And so those prediction errors that we make based on, you know, we make a prediction based on memory and the errors are where the action is.
And so those prediction errors that we make based on, you know, we make a prediction based on memory and the errors are where the action is.