Knowing how people will respond in different situations is essential if you hope to keep them safe during a crisis. A type of simulation known as agent-based modelling attempts to understand interpersonal behaviours.

• A model is just a series of calculations that abstractly represent some systems in the real world. We use models all the time.
• We may work out the routes we could take to get to work at a specific time of the day. We use past data to make predictions about what we...

You can never accurately predict what's going to happen. Some efforts come close.