Dense crowds flow like water and move like waves
When a crowd reaches a critical density, individual will vanishes as bodies transform into a liquid mass that flows and ripples like the tide.
In a packed stadium or narrow street, there is a invisible threshold where human physics transforms into fluid dynamics. Once six people occupy a single square meter, the crowd loses its status as a group of individuals and begins to behave like a liquid. At this density, physical contact is so constant that the crowd can no longer be compressed. If one person moves, the force ripples through the mass as a shock wave, pushing others several meters away without them taking a single step. These waves carry hundreds of newtons of force, enough to bend steel railings or make it impossible for a person to control their own limbs.