"Measurement owes its existence to Earth; estimation of quantity to measurement; calculation to estimation of quantity; balancing of chances to calculation; and victory to balancing of chances." - Sun Tzu, The Art of War (Translated by L. Giles)

The quote from Sun Tzu seems to suggest how a military leader gathers data; adapts to different situations; and makes decisions weighing the circumstances. It says that the balancing of chances depends on "calculation." I…