Computer models show that the design of Pompeii’s Anfiteatro and other ancient stadia were superior in terms of crowd management. In ancient Pompeii the toilets were separate from the arena, in a grand facility called a Palaestra. In addition to design, the infrastructure supporting it must also be designed for managing the masses. The key design element here is openness everyhwere. No open spaces close in on a single doorway or stairway, and no large roads force crowds onto a single narrower road.”]