Dennis Bartolo

Dance crowds by themselves are not dangerous. So what's very dangerous when you're in a dance crowd is to be close to rigid walls. You want to be in the bulk. Do not go to the boundaries. Stay away from the walls.

Dance crowds by themselves are not dangerous. So what's very dangerous when you're in a dance crowd is to be close to rigid walls. You want to be in the bulk. Do not go to the boundaries. Stay away from the walls.

And because these spontaneous motions are periodic in time, they are very easy to detect. And they are very easy to detect very early on, before they become dangerous.

And because these spontaneous motions are periodic in time, they are very easy to detect. And they are very easy to detect very early on, before they become dangerous.

Dance crowds by themselves are not dangerous. So what's very dangerous when you're in a dance crowd is to be close to rigid walls. You want to be in the bulk. Do not go to the boundaries. Stay away from the walls.

And because these spontaneous motions are periodic in time, they are very easy to detect. And they are very easy to detect very early on, before they become dangerous.