I know your question was rhetorical, but let's give it fair consideration. I suspect what they'll learn is whether they have the capability to analyze the movem

I know your question was rhetorical, but let's give it fair consideration. I suspect what they'll learn is whether they have the capability to analyze the movements of their entire population efficiently and if not, what it would take to do so. Armed with that knowledge, they can prepare for the eventuality where the one-off exercise gets turned on permanently.