[Ch’en Hao says: "He plans no superfluous marches, he devises no futile
attacks." The connection of ideas is thus explained by Chang Yu: "One
who seeks to conquer by sheer strength, clever though he may be at
winning pitched battles, is also liable on occasion to be vanquished;
whereas he who can look into the future and discern conditions that are
not yet manifest, will never make a blunder and therefore invariably
win."]
Making no mistakes is what establishes the certainty of victory, for it
means conquering an enemy that is already defeated.