If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.
—Sun Tzu, The Art of War
It is difficult to overstate the value of understanding your adversary. Every facet of the existence of your opponent has some nonzero probability of having an effect on the magnitude of the success of your mission. Whether you use evidence of specific personality types, apply norms of small group interaction, assign specific ...