It's curious how Man does these things naturally, but needs many man-years of studies and experimentation to arrive at gross approximations of how we function.
All the logic of how we move in crowds is in our brains, we apply it every day. Yet we don't know it explicitly. Something that we do consciously, even.
But, in this case, it's rather emergent behaviour that's pointed out. We know how we behave how the person in front of us steps out of line: we move to the side ourselves or slow down. What's less obvious is when and how this cascades onto the whole crowd.
I don't know exactly what their physical analogies with fluid dynamics are, but this sounds like turbulence.
All the logic of how we move in crowds is in our brains, we apply it every day. Yet we don't know it explicitly. Something that we do consciously, even.
But, in this case, it's rather emergent behaviour that's pointed out. We know how we behave how the person in front of us steps out of line: we move to the side ourselves or slow down. What's less obvious is when and how this cascades onto the whole crowd.
I don't know exactly what their physical analogies with fluid dynamics are, but this sounds like turbulence.