Janna Levin

There are examples of emergent phenomena which are very simple and clean. Like I can just take electromagnetic scattering, which is law of physics where particles scatter just by electromagnetically. And I have a lot of them and I have a lot of them in this room and they come to some average. Well, I call that temperature.

There are examples of emergent phenomena which are very simple and clean. Like I can just take electromagnetic scattering, which is law of physics where particles scatter just by electromagnetically. And I have a lot of them and I have a lot of them in this room and they come to some average. Well, I call that temperature.

And that one number, the fact that there's one number describing all of these gazillions of particles is an emergent quantity. There's no particle that carries around this fundamental property called temperature. It emerges from the collective behavior of tons and tons of particles. In some sense, temperature is not a fundamental quantity. It's not a fundamental law of nature.

And that one number, the fact that there's one number describing all of these gazillions of particles is an emergent quantity. There's no particle that carries around this fundamental property called temperature. It emerges from the collective behavior of tons and tons of particles. In some sense, temperature is not a fundamental quantity. It's not a fundamental law of nature.

And that one number, the fact that there's one number describing all of these gazillions of particles is an emergent quantity. There's no particle that carries around this fundamental property called temperature. It emerges from the collective behavior of tons and tons of particles. In some sense, temperature is not a fundamental quantity. It's not a fundamental law of nature.

It's just what happens... from the collective behavior. And that's what we'd be saying. We'd be saying, oh, this emerges from the collective behavior of lots and lots and lots of quantum interactions.

It's just what happens... from the collective behavior. And that's what we'd be saying. We'd be saying, oh, this emerges from the collective behavior of lots and lots and lots of quantum interactions.

It's just what happens... from the collective behavior. And that's what we'd be saying. We'd be saying, oh, this emerges from the collective behavior of lots and lots and lots of quantum interactions.

Yeah, we could discover dark matter, dark energy. We could discover extraspatial dimensions. We could discover that those three things are linked, that there's like a dark sector to the universe that's hiding in these extra dimensions. And that's something that I love to work on. I think it's really fascinating.

Yeah, we could discover dark matter, dark energy. We could discover extraspatial dimensions. We could discover that those three things are linked, that there's like a dark sector to the universe that's hiding in these extra dimensions. And that's something that I love to work on. I think it's really fascinating.

Yeah, we could discover dark matter, dark energy. We could discover extraspatial dimensions. We could discover that those three things are linked, that there's like a dark sector to the universe that's hiding in these extra dimensions. And that's something that I love to work on. I think it's really fascinating.

All of those would also be clues about this question, but they wouldn't solve this problem. I think it's impossible to predict. There has been real progress. And the progress, as we've said, comes from the childlike curiosity of saying, well, I don't actually understand this. I'm going to keep leaning on it because I don't understand it. And then suddenly you realize nobody really understood it.

All of those would also be clues about this question, but they wouldn't solve this problem. I think it's impossible to predict. There has been real progress. And the progress, as we've said, comes from the childlike curiosity of saying, well, I don't actually understand this. I'm going to keep leaning on it because I don't understand it. And then suddenly you realize nobody really understood it.

All of those would also be clues about this question, but they wouldn't solve this problem. I think it's impossible to predict. There has been real progress. And the progress, as we've said, comes from the childlike curiosity of saying, well, I don't actually understand this. I'm going to keep leaning on it because I don't understand it. And then suddenly you realize nobody really understood it.

So I don't know. Do I think it's a harder problem than the problem of the origin of life? I think it's technically a harder problem, but I don't know. Maybe the breakthrough will come.

So I don't know. Do I think it's a harder problem than the problem of the origin of life? I think it's technically a harder problem, but I don't know. Maybe the breakthrough will come.

So I don't know. Do I think it's a harder problem than the problem of the origin of life? I think it's technically a harder problem, but I don't know. Maybe the breakthrough will come.

Well, we know that there are three spatial dimensions. We like to talk about time as a dimension. We can argue about whether that's the right thing to do. But we don't know why there are only three. It very well could be that there are extra spatial dimensions, that there's like a little origami of these tightly rolled up dimensions. Not all the models require that they're small, but most do.

Well, we know that there are three spatial dimensions. We like to talk about time as a dimension. We can argue about whether that's the right thing to do. But we don't know why there are only three. It very well could be that there are extra spatial dimensions, that there's like a little origami of these tightly rolled up dimensions. Not all the models require that they're small, but most do.

Well, we know that there are three spatial dimensions. We like to talk about time as a dimension. We can argue about whether that's the right thing to do. But we don't know why there are only three. It very well could be that there are extra spatial dimensions, that there's like a little origami of these tightly rolled up dimensions. Not all the models require that they're small, but most do.