As you might guess, modifiers like Carbine Accuracy increase your chances of hitting an opponent with an attack. How is this to-hit chance determined? How do your opponent's defense modifiers, posture, and secondary defenses affect your chance to hit him or her? Please note that discussion only focuses on your initial chance to hit your target. Even if you manage a successful attack, your opponent still has a chance to avoid damage through his/her secondary defenses (Dodge, Counterattack, and Block). Unfortunately, no equations for these defenses are currently known.