I didn't mean running the staffing level on a plan that is either unattainable and/or wrong. Thats just silly.
Lets say the plan calls for 200 people. You decide each wing is going to run 1 person over the plan. If that was a realistic plan for you to hit your goal, it doesn't matter now. The plan is now meaningless, as all of the important values will change.
The operations are volatile, and you have to react and do what you need to do. I get that there is only so much you can plan.
But why bother with presort if nothing on the plan is going to be followed?