Is There a Protocall for Averages of Large Numbers?

You can take a sub sample multiple times of a network, and it come to the right answer. The randomness is important because a has togo with something recent like r tat a central init theorem. It's basely like an average of averages. And so ee o taty how many s i ampit, right? So li mter tiful proof proving th i'm sure that there's a proof behind a form thiss bein.