How This Came to Be
Sometimes when you're writing a scenario, you want to know exactly how dangerous an attack is to ensure a certain game experience. Maybe you've killed a bunch of Agents before with situations you thought were relatively safe and want to avoid making the same mistake. Maybe the narrative pacing requires an enemy dangerous enough to command attention but not so dangerous that it wipes the party. In either case, you have some math to do so you can make an informed decision on what damage to use.