It knows it has to plan for managed decline, but it can't even plan for managed decline if it doesn't know how much decline to manage.

He is what they call the madala on the farm, and he has worked here all his life.

Coordinate term: blessing of dimensionality

HFNs have autocorrelograms with a blunt peak (C,D) and TANs are characterized by a deep gap in the autocorrelogram (E,F).