A response plan can look complete until several people try to use it at once. A simulation introduces a situation and asks participants to act within it. The exercise might be a discussion around a table or a more involved rehearsal with changing information and actual equipment.
Different simulation formats test different capabilities. Talking through who would contact a partner does not establish that the contact information works or that someone can reach them at night.
Discovering the missing handoff
Imagine a festival team rehearsing the loss of its main venue one day before opening. The organizer contacts performers, but who tells ticket holders? Who can authorize replacement spending? The scenario reveals gaps between responsibilities that looked clear in separate documents.
The exercise needs enough realism to expose the intended problem, but more drama is not automatically better. Surprising people with complications they could not reasonably address may demonstrate only that the exercise designer controls the story.
A discussion afterward connects what happened to changes in the real arrangement. Participants might revise a contact tree, assign a neglected responsibility, or discover that the plan depends on resources they do not have. A rehearsal cannot reproduce every pressure of a real emergency. Its practical value lies in discovering and repairing these gaps before an actual incident supplies a much more expensive test.