So as to distract attention, do not always do things the same way, especially if you have a rival.Do not always act on first impulse;people will soon recognize the uniformity and, by anticipating, frustrate your designs.It is easy to kill a bird on the wing that flies straight, not so one that twists and turns.Nor should you always act on second thoughts;people will discern the plan the second time.The enemy is on the watch, great skill is required to outwit him.The gamester never plays the card the opponent expects, still less the one he wants.